牛津上海版(试用版)六年级下册Module 3 The nature world Unit 11Exercise 1（含答案）.docx
牛津上海版（试用本）同步练习
一、单项选择（共9小题）
1. What did people use to start _____ fire in the past
A.the B.a C./ D.an
2. There _____ a fire alarm and two fire extinguishers in the wall.
A.are B.is C.have D.has
3. Many, many years ago, Chinese people _____ the Great Wall.
A.built B.have built C.build D.are building...