16.—Hi, Bill! how was your visit to the Louvre?
— . I would visit a thousand times.
A. it couldn't be better B. It was a nightmare
C. That's a good point D. I managed it somehow
17. If fish are jumping higher than usual or frogs are croaking more loudly, it rain.
A. must B. may C. shall D need
18. Each summer definitely seems hotter than the last. Experts say this bad weather has occurred climate change.
A. due to B. leading to C. lack of D. regardless of
19. We all got good grades, for our English teacher had given us time to get well-prepared for this test.
A. sufficient B. temporary C. important D. magnificent
20. Art is everywhere around us. Look! Beautiful works of art on that building.
A. is painting B. is being painted
C. are painting D. are being painted