2023-2024学年八年级英语下册Unit 5 Save the endangered animals语法填空练习（含解析）（牛津深圳版）

Unit 5 Save the endangered animals
单元话题语法填空练习
（22-23八年级下·湖南怀化·期末）阅读下面材料，在空白填入一个适当的单词或括号内单词的正确形式。
Scientists say there are now fewer than 2,000 pandas living in the forests. Another 300 or so live in zoos or research centers in China and other 1 (country). Pandas do not have many babies, maybe only one every two years. The babies often die from illnesses and do not live very long. Adult pandas spend more than 12 hours 2 day eating about 10 kilos of bamboo. Many years ago, there 3 (be) a lot more bamboo forests and pandas in China, but then humans started to cut down 4 (this) forests. As the forests get 5 (small) and other human activities cause more problems, pandas cannot find enough to eat 6 they are having fewer babies.
An education program in Chengdu 7 (teach) children about pandas and other endangered wild animals. They send people to schools to tell children about the 8 (important) of saving these animals. And the Chinese government is trying hard 9 (help) save the pandas. Scientists are doing research to better understand the habits of pandas. We all hope that 10 the future there will be a lot more pandas.
（21-22八年级下·浙江宁波·期末）阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式(最多限填三个单词)填空。
Scientists predict that most polar bears will die out by the year 2100 because of global warming.
Polar bears are found in the far north, inside the Arctic Circle. They spend most of their time 11 (live) on the ice which covers the Arctic seas.
As the world gets much 12 (hot) because of man-made climate change, the ice cap will be 13 small and thin that the polar bears can’t have enough places to travel and hunt. What’s worse, the Arctic is warming about twice as 14 (quick) as other places.
Seals are polar bears’ main food. Polar bears usually catch seals in places 15 the ice meets the water. 16 (catch) seals, the bears need to be able to walk and run across the ice. Polar bears are strong swimmers, 17 they’re not fast enough to catch seals in the water.
18 polar bears, summers are the hardest time. With less ice to travel on, they’re forced to spend more time on land, where there isn’t much food. And rising temperatures in the Arctic are causing the bears to have less areas for hunting. That’s really a matter of life and 19 (die).
The scientists believe that in the past few years, polar bears 20 (start) dying out in southern areas of the Arctic, like Canada. To help save polar bears, rapid action is needed to reduce the effect of global heating.
（20-21八年级下·湖南娄底·期末）阅读下面的材料，在空白处填入一个适当的词，或填入括号内所给单词的正确形式（每空最多不超过三个单词）
Do you like animals Animals 21 (be) the closest friends to us in the world. It is important 22 (learn) things about 23 (protect) animals. Some of them are big and dangerous. People should keep away from them. 24 , some animals are in great danger, and they are asking 25 help. When we come to the Chengdu Research Base, we can see the cute and 26 (love) baby pandas. When the babies see the keepers, they run over with 27 (excite). Pandas don’t have babies very often, and some of them only live a short time because of 28 (ill). Adult pandas spend over 12 hours a day 29 (eat) about 10 kilos of bamboo. Pandas have become so popular 30 they are now a symbol of China. So we shouldn’t cut down trees. Our government should try hard to save the endangered (濒临灭绝的) animals.
（20-21八年级下·全国·期末）With the rapid development of the cities, many different kinds of animals are in danger. The number of them is getting smaller and smaller. 31 (cut) down forests, farming and development all result in the loss of wildlife habitat(栖息地). Everyone can give a hand to those 32 (danger) animals. So, if we can protect the wildlife habitat, animals can 33 (protect) together naturally.
It 34 (report) that as many as one billion birds in the United States die each year because 35 collisions(碰撞) with windows. You can help reduce the number of collisions 36 (simple) by placing decals(贴花纸) on the windows in your home and in the office.
Many native animals have to live in developed areas, and this 37 (mean) they must move to human-living areas. One of 38 (big) obstacles(障碍) for native animals is created by roads. It is because roads divide wildlife habitat that 39 constant danger is caused to animals when they are trying 40 (cross) from one side to the other. So when you go out, slow down and keep an eye out for wildlife.
（21-22八年级上·宁夏石嘴山·期末）阅读下面短文，在空白处填入适当的单词或括号内单词的正确形式。
Pandas are 41 danger. There 42 (be)only about 1, 600 pandas in the wild today. Zoos and research centres are looking after about 340 pandas. Pandas do not have many 43 (baby), and baby pandas often die. The situation is getting very difficult. Scientists are doing a lot of research to help pandas produce more babies and help baby pandas live.
Pandas live in the forests and mountains of Southwest China. Each panda 44 (need) to eat a lot of bamboo every day. The bamboo forests are getting much 45 (small), 46 pandas are losing their home.
In order to protect pandas in the wild, the government is 47 (set) up nature parks and developing other plans. The nature parks will be big and there will be more bamboo to feed the pandas. Pandas born in zoos may go back to live in the nature parks.
The World Wide Fund for Nature (WWF) wants to protect all kinds of animals. And it chose 48 panda to be 49 (it) symbol. We do not want to lose tigers, elephants or any other animals, so the WWF is working hard 50 (save) them all.
（22-23九年级上·浙江温州·期末）语法填空
Many animals are in danger. In order to protect the animals, World Animal Day falls on the 51 (four) of October. Protecting animals has got much attention all over the world. It is to make the world 52 better place for all animals.
Every year IUCN reports some important information about the plants and animals in danger. The giraffe is one of 53 (they). Over the last 30 years, the number of giraffes has dropped by 40%. Things are getting much 54 (bad). There are now fewer than 100,000 giraffes in the world today! Many animals are losing their 55 (life) because of human activities. Animals are often killed 56 their meat, teeth or even just for fun.
Animals will get more help, if everyone 57 (start) to do something. Here are the things you can do.
Love animals. You could give them a hand when it is necessary. They can live 58 (happy) with us.
Go outside to see wildlife. If you take a walk in nature, you can enjoy 59 (see) all the plants and animals around you.
Speak up for wildlife. Animals can't speak for themselves. You can be a voice for your animal friends.
Learn more about 60 (animal) difficult situations. By learning about their problems and pains, you can find new ways to help them.
（22-23九年级上·湖南长沙·期末） 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。
61 （recent）, the IUCN（世界自然保护联盟）has declared the extinction（灭绝）of the Chinese paddlefish（白鲟）. In fact, the news is not new. In 2019, some Chinese 62 （researcher）said that the fish probably died out between 2005 and 2010. The last time we saw the Chinese paddlefish was in 2003.
As the world’s 63 （large）freshwater fish, the Chinese paddlefish used to live 64 the Yangtze
River. The precious（珍稀的）fish 65 （know）as the Chinese swordfish（剑鱼）. Sometimes it was called the “panda of the Yangtze”. The fish could grow up to 7 meters long and weigh up to 500 kilograms. It had lived for about 150 million years on this planet!
In ancient times, a changing planet killed off the dinosaurs（恐龙）. The Chinese paddlefish lived through the extinction, 66 they couldn’t live through modern times. The large fish finally faced the biggest threat（威胁）: humans. They overfished, built dams（水坝）and polluted the river. All these caused the extinction of the ancient creature.
As we all know, it’s a 67 （pain）loss（损失）to our planet. We can’t get the fish back but its extinction is 68 warning sign to all of us. The Yangtze River is home to more than 400 species of fish but now many of 69 （they）are at risk of dying out. We should make an effort 70 （protect）them.
（2022·宁夏吴忠·二模）阅读下面短文，在空白处填入适当的单词或括号内单词的正确形式（每空一词）。
Many have heard of shark fin soup. This famous and expensive dish is especially popular in 71 (south) China. But do you realize that you’re 72 (kill) a whole shark each time you enjoy 73 bowl of shark fin soup
When people catch sharks, they cut off their fins and throw the shark back into the ocean.
This is not only cruel, but also 74 (harm) to the environment. Without a fin, a shark can no longer swim and 75 (slow) dies. Sharks are at the top of the food chain in the ocean’s ecosystem. 76 their numbers drop too low, it will bring danger to all ocean life. Many believe that sharks can never be endangered because they are the 77 (strong) in their food chain. But in fact, around 70 million sharks are 78 (catch) and traded in this industry every year. The numbers of some kinds of sharks have fallen by over 90 percent in the last 20 to 30 years.
Environmental protection groups around the world, such as Wild Aid and the WWF, are teaching the public about “finning”. They have even asked governments to develop 79 (law) to stop the sale of shark fins. So far, no scientific studies have shown that shark fins are good 80 health, so why eat them Help save the sharks!
参考答案：
1．countries 2．a 3．were 4．these 5．smaller 6．and 7．teaches 8．importance 9．to help 10．in
【导语】本文介绍了大熊猫的现状以及它们数量减少的原因。中国政府正在努力帮助挽救濒危野生动物。
1．句意：还有300个左右的大熊猫生活在中国和其他国家的动物园或研究中心。country“国家”，有other修饰，用复数名词，故填countries。
2．句意：成年熊猫一天花费12多个小时吃大约10千克竹子。day是辅音音素开头的单数名词，用不定冠词a修饰，故填a。
3．句意：很多年前，中国有更多的竹林和熊猫，但是那时人们开始砍掉这些竹林。be“是”，根据“Many years ago”可知，此处用一般过去时，主语a lot of more bamboo forest and pandas是复数形式，谓语用复数形式，故填were。
4．句意：很多年前，中国有更多的竹林和熊猫，但是那时人们开始砍掉这些竹林。this“这个”，修饰复数名词forests，用these，故填these。
5．句意：因为竹林变得更小了，以及其他一些人类的活动导致更多的问题，熊猫无法找到足够的食物，然后它们生的宝宝就更少了。small“小的”，根据“more problems”可知，此处用比较级，故填smaller。
6．句意：因为竹林变得更小了，以及其他一些人类的活动导致更多的问题，熊猫无法找到足够的食物，然后它们生的宝宝就更少了。此处连接并列句，用连词，结合句意，此处前后句子表示承接关系，用连词and，故填and。
7．句意：成都的一个教育项目教孩子们有关大熊猫和其他濒危的野生动物的知识。teach“教”，主语是“An education program”，时态是一般现在时，谓语用第三人称单数，故填teaches。
8．句意：他们派人去学校告诉孩子们关于挽救这些动物的重要性。important“重要的”，是形容词，the+名词+of表示“……的……”，因此用名词形式，故填importance。
9．句意：中国政府正在努力帮助挽救大熊猫。help“帮助”，try to do sth“努力做某事”，固定短语，所以空处用动词不定式，故填to help。
10．句意：我们都希望在未来将有更多的大熊猫。in the future“在未来”，固定搭配。故填
in。
11．living/in living 12．hotter 13．so 14．quickly 15．where 16．To catch 17．but 18．For 19．death 20．have started
【导语】本文主要讲了全球变暖使北极熊的生存环境变得艰难。
11．句意：它们大部分时间生活在覆盖北冰洋上面的冰上。根据sb spend some time (in) doing sth“某人花费时间做某事”可知空格处应为living或in living。故填living/in living。
12．句意：由于人为的气候变化，世界变得越来越热，冰盖将变得又小又薄，北极熊无法有足够的地方旅行和狩猎。根据句意以及空格前的修饰词much可知，空格处缺少比较级，表示世界变得越来越热，hot的比较级形式为hotter。故填hotter。
13．句意：由于人为的气候变化，世界变得越来越热，冰盖将变得又小又薄，北极熊无法有足够的地方旅行和狩猎。根据空格后“ …small and thin that the polar bears can’t have enough places to travel and hunt. ”可知，此处缺少副词so，构成so…that句式，意为“如此……以至于……”。故填so。
14．句意：更糟糕的是，北极正在以较其他地方两倍的速度变暖。根据空格前后的“twice as …as”可知此处为“倍数+as+形容词或副词的原级+as+其它”结构，空处修饰谓语动词，应为副词原级。故填quickly。
15．句意：北极熊通常在冰与水接触的地方捕捉海豹。根据“the ice meets the water”可知此处为定语从句，先行词places指地点，在从句中作状语，用where引导定语从句。故填where。
16．句意：为了捕捉海豹，北极熊需要能够在冰上行走和奔跑。根据所给的提示词可知，空处缺少动词不定式表目的，表示“为了捕捉海豹”。故填To catch。
17．句意：北极熊是游泳健将，但他们的速度还不够快到去在水中抓住海豹。根据空格前后的内容，可知此处表转折。故填but。
18．句意：对北极熊来说，夏天是最艰难的时候。根据“summers are the hardest time”以及后面的内容可知，此处指对北极熊来说，夏天是最艰难的时候，介词for“（表示对象）对”。故填For。
19．句意：那真是生死攸关的大事。and前后连接相同成分，life此处为名词，表“生命”，故空格处缺少名词形式，death“死亡”。故填death。
20．句意：科学家们认为，在过去的几年里，北极熊开始在北极的南部地区灭绝，如加拿大。根据时间状语“in the past few years”可知，该句为现在完成时，主语polar bears 为复数，空处应填谓语动词。故填have started。
21．are 22．to learn 23．protecting 24．However 25．for 26．lovely 27．excitement 28．illness 29．eating 30．that
【分析】21．句意：动物是我们在世界上最亲密的朋友。根据“Animals”可知，主语是复数，结合全文时态，是一般现在时，因此are符合句意。故填are。
22．句意：学习有关保护动物的知识是很重要的。根据“It is important to do sth.”可知，此空需要动词不定式，结合英文提示，to learn符合句意。故填to learn。
23．句意：学习有关保护动物的知识是很重要的。根据“about”可知，此空需要一个动名词作宾语，结合英文提示，protecting符合句意。故填protecting。
24．句意：然而，一些动物处于极大的危险中，他们正在寻求帮助。根据“some animals are in great danger”可知，与前句是转折关系，且有逗号隔开，因此however符合句意，位于句首，首字母大写。故填However。
25．句意：然而，一些动物处于极大的危险中，他们正在寻求帮助。根据固定搭配“ask for help”可知，for符合句意。故填for。
26．句意：当我们来到成都研究基地，我们可以看到可爱的熊猫宝宝。根据“baby pandas”可知，需要一个形容词作定语，结合英文提示，lovely符合句意。故填lovely。
27．句意：当幼崽看到饲养员时，它们兴奋地跑了过来。根据“with”可知，此空需要一个名词作宾语，结合英文提示，excitement符合句意。故填excitement。
28．句意：熊猫不经常生孩子，有些熊猫因为生病而活得很短。根据“because of ”可知，此空需要一个名词，结合英文提示，illness符合句意。故填illness。
29．句意：成年熊猫每天要花12个多小时吃大约10公斤的竹子。根据“spend sth. doing sth.”可知，此空需要动名词，结合英文提示，eating符合句意。故填eating。
30．句意：熊猫非常受欢迎，现在它们已经成为中国的象征。根据“Pandas have become so popular”和“they are now a symbol of China. So we shouldn’t cut down trees.”可知，空格前后构成因果关系，根据“so”可知，此处是so...that...引导结果状语从句。故填that。
31．Cutting 32．endangered 33．be protected 34．is reported 35．of 36．simply 37．means 38．the biggest 39．a 40．crossing
【详解】1.考查动名词的用法。根据句意：砍伐森林，农耕和发展都致使它们的野生栖息地的减少。分析句子成分可知，空缺处缺少主语，这里是动名词做主语，且位于句首，首字母需大写。故此处应填入Cutting。
2.考查形容词的用法。根据句意：每个人都可以帮助这些濒危的动物。分析句子成分可知，空缺处缺少形容词，修饰名词。故此处应填入endangered。
3.考查被动语态的用法。根据句意：如果我们能保护野生栖息地，那么动物也就自然被一起保护了。故此处应填入be protected。
4.考查固定句型。It is reported that…表示根据报道可知……。根据句意：据报道，在美国，每年约有10亿只鸟因为撞到窗户死亡。故此处应填入is reported。
5.考查固定结构。because of意为“由于；因为”。根据句意：据报道，在美国，每年约有10亿只鸟因为撞到窗户死亡。故此处应填入of。
6.考查副词修饰动词。分析句子成分可知，空缺处缺少副词，故此处应填入simply。
7.考查动词的用法。分析句子成分可知，空缺处缺少谓语动词，且全文采用一般现在时态写作，主语是第三人称单数，动词应使用单数形式。故此处应填入means。
8.考查固定结构。one of +形容词最高级+名词复数表示最……之一。根据句意：对当地的动物来说，最大的一个障碍是由道路造成的。故此处应填入the biggest。
9.考查不定冠词的用法。根据句意：这是因为道路将野生的栖息地划分开来，以致于给试图过马路的动物造成了一个持续的危险。故此处应填入a。
10.考查固定搭配。try doing sth意为“尝试去做某事”。根据句意：这是因为道路将野生的栖息地划分开来，以致于给试图过马路的动物造成了一个持续的危险。故此处应填入crossing。
41．in 42．are 43．babies 44．needs 45．smaller 46．so 47．setting 48．the 49．its 50．to save
【导语】本文介绍了熊猫现在面临的状况以及熊猫的生活习性，并告诉我们政府和世界自然基金会正在为保护野生动物作出努力。
41．句意：熊猫处于危险之中。根据“Pandas are…danger.”可知，熊猫处于危险之中。in danger“处于危险之中”为固定搭配。故填in。
42．句意：现在野生大熊猫大约仅有1600只。分析句型可知，此句为there be句型，主语是“only about 1, 600 pandas”，be动词用are。故填are。
43．句意：熊猫没有许多幼崽。根据“Pandas do not have many…”可知，many“许多”后加名词复数，结合提示词baby，复数为babies。故填babies。
44．句意：每个熊猫每天需要吃很多竹子。根据“Each panda…(need) to eat a lot of bamboo every day.”可知，此处缺少谓语动词，each+名词单数+谓语动词单数形式。故填needs。
45．句意：竹林正变得更小了，所以熊猫正在失去他们的家园。根据“The bamboo forests are getting much…(small)”可知，get+形容词“变得…”，much可修饰比较级。故填smaller。
46．句意：竹林正变得更小了，所以熊猫正在失去他们的家园。根据“The bamboo forests are getting much…(small), …pandas are losing their home.”可知，前句是原因，后句是结果。so“所以”。故填so。
47．句意：为了保护野生熊猫，政府正在建立自然公园并发展其他的计划。根据“In order to protect pandas in the wild, the government is…(set) up nature parks and developing other plans”可知，此句缺少谓语动词，前有is，后and连接两个并列动词，所以此句用现在进行时。故填setting。
48．句意：它选择熊猫作为它的象征。根据“And it chose…panda to be…(it) symbol.”可知，名词前缺少冠词，特指用the。故填the。
49．句意：它选择熊猫作为它的象征。根据“And it chose…panda to be…(it) symbol.”可知，symbol“象征”，名词前缺少形容词性物主代词。故填its。
50．句意：我们不想要失去老虎，大象和其他动物们，所以WWF组织正在努力拯救它们。根据“so the WWF is working hard…(save) them all.”可知，WWF组织正在努力拯救它们。表目的用不定式。故填to save。
51．fourth 52．a 53．them 54．worse 55．lives 56．for 57．starts 58．happily 59．seeing 60．animals'
【导语】本文介绍了一些濒危的植物和动物，呼吁大家开始做点什么，让动物和植物将得到更多的帮助。
51．句意：10月4日是世界动物日。根据定冠词the，可知此空用four的序数词fourth意为“第四”，表示10月4日。故填fourth。
52．句意：它就是为所有动物创造一个更美好的世界。根据句意和可数名词place，可知用表示泛指的冠词，better以辅音音素开头，可知用a。故填a。
53．句意：长颈鹿就是其中之一。根据固定短语one of意为“……之一”，其后接宾格。they的宾格是them意为“它们”。故填them。
54．句意：事情越来越糟了。根据much后接形容词的比较级，bad的比较级是worse意为“更糟糕的”。故填worse。
55．句意：由于人类活动，许多动物正在失去它们的生命。根据句意和their，可知用life的复数形式lives意为“生命”。故填lives。
56．句意：人们常常为了肉、牙齿甚至只是为了好玩而杀死动物。根据固定短语kill for意为“为……而杀死”。故填for。
57．句意：如果每个人都开始做点什么，动物们将得到更多的帮助。根据if引导的条件状语从句，遵循主将从现的原则，主语是everyone，动词用第三人称单数形式starts意为“开始”。故填starts。
58．句意：他们可以和我们一起快乐地生活。根据动词live（生活），可知用副词happily意为“快乐地”修饰。故填happily。
59．句意：如果你在大自然中散步，你可以享受看到你周围所有的植物和动物。根据固定短语enjoy doing sth.意为“喜欢／享受做某事”。可知用see的现在分词seeing意为“看见”。故填seeing。
60．句意：更多地了解动物的困境。根据句意和difficult situations（困境），可知用animal的复数名词所有格animals意为“动物们的”。故填animals'。
61．Recently 62．researchers 63．largest 64．in 65．was known 66．but 67．painful 68．a 69．them 70．to protect
【导语】本文解释了中华白鲟灭绝的事实，同时该物种的灭绝给人类敲响了保护长江流域淡水物种的警钟。
61．句意：最近，世界自然保护联盟宣布中华白鲟灭绝。recent是形容词，此处修饰句子，应用副词，故填Recently。
62．句意： 2019年, 一些中国研究人员表示，这种鱼可能在2005年至2010年之间灭绝。some修饰可数名词复数，故填researchers。
63．句意：作为世界上最大的淡水鱼，中华白鲟过去生活在长江里。根据定冠词the可知，用形容词最高级largest。故填largest。
64．句意：作为世界上最大的淡水鱼，中华白鲟过去生活在长江里。根据“the Yangtze River”可知，是短语live in“居住在……里”。故填in。
65．句意：这种珍贵的鱼被称为中国剑鱼。固定短语be known as“被称为”，时态是一般过去时，be动词用was。故填was known。
66．句意：中华白鲟经历了大灭绝，但它们无法生存到现代。前后句构成转折关系，应用but连接。故填but。
67．句意：我们都知道，这对我们的星球是一个惨痛的损失。空后是名词，应用形容词painful“痛苦的”修饰，故填painful。
68．句意：我们不能让鱼回来，但它的灭绝对我们所有人来说是一个警告信号。此处是泛指一个警告信号，warning以辅音音素开头，应用a。故填a。
69．句意：长江是400多种鱼类的家园，但现在其中许多鱼类正面临灭绝的危险。of是介词，后加代词宾格作宾语。故填them。
70．句意：我们应该努力保护它们。根据句子可知，努力是为了保护它们，应用动词不定式作目的状语，故填to protect。
71．southern 72．killing 73．a/one 74．harmful 75．slowly 76．If 77．strongest 78．caught 79．laws 80．for
【导语】本文主要讲述了人们为喝鱼翅汤，大量捕杀鲨鱼，导致鲨鱼数量大幅度减少，置整个海洋生态系统于危险之中，危害环境。作者呼吁人们停止捕杀鲨鱼，去拯救鲨鱼。
71．句意：这道名贵的菜在中国南方特别受欢迎。空处的词是修饰名词，故应用形容词；south“南方”，名词，对应的形容词是southern“南方的”。故填southern。
72．句意：但你是否意识到，每次享用一碗鱼翅汤，你都在杀死一整条鲨鱼。分析句意可知，主语和动词之间是主动关系；根据空前are的提示可知，空处所在的句子应用现在进行时，构成形式为：be doing；kill的现在分词是killing。故填killing。
73．句意：但你是否意识到，每次享用一碗鱼翅汤，你都在杀死一整条鲨鱼。根据句意可知，
空处的词表示泛指或数量“一”，且bowl以辅音音素开头，故应用a/one。故填a/one。
74．句意：这不仅残忍，而且对环境也有害。空处的词在系动词is之后，故应用形容词；harm“伤害”，动词，对应的形容词是harmful“有害的”。故填harmful。
75．句意：没有鱼鳍，鲨鱼就不能游泳，然后慢慢地死了。分析句子结构可知，空处的词是修饰动词，故应用副词；slow“慢的”，形容词，对应的副词是slowly“慢慢地”。故填slowly。
76．句意：如果它们的数量下降得太低，将给所有海洋生物带来危险。分析前后句句意可知，空处的词是引导条件状语从句，故应用if“如果”，表达“如果数量下降，将给所有海洋生物带来危险”的意思，句首首字母大写。故填If。
77．句意：许多人认为鲨鱼永远不会受到威胁，因为它们是食物链中最强壮的。根据空后比较的范围“in their food chain”可知，空处形容词应用最高级形式作表语。故填strongest。
78．句意：但事实上，该行业每年约有7000万条鲨鱼被捕获和交易。分析句意可知，主语和动词之间是被动关系，故应用被动语态；结合空前are可知，应用一般现在时的被动语态，构成形式为：be done；catch“抓住”，动词，其过去分词是caught。故填caught。
79．句意：他们甚至要求各国政府制定法律来停止鱼翅的销售。law“法律”，此处是指“某项法律”是可数名词，应用复数形式表示类别。故填laws。
80．句意：到目前为止，还没有科学研究表明鱼翅对健康有益，那么为什么要吃它们呢？be good for“对……有益”，固定短语。故填for。