27. Don't climb the tall tree. It's ______.

A. noisy B. easy C. dangerous D. exciting

28. Look! There are five planes ______ in the sky.

A. fly B. flying C. to fly D. to flying

29. I will work hard at English. I believe I will ______ learn it well soon.

A. can B. could C. be able to D. am able to

30. The clouds are in different ______. Some are like sheep and some are like horses.

A. shapes B. sizes C. heights D. colors

31. -Sue, don't run in the hallways.

-Sorry, I ______ do that again.

A. should B. must C. won't D. couldn't

32. My family like eating fruit. We plan to ______ fruit trees behind our house.

A. plant B. water C. put D. take

33. Lots of houses here ______ after days of heavy rain.

A. sat down B. cut down C. fell down D. wrote down

34. -Will your school have a school trip this term?

-______. It's on June 7th.

A. Yes, it is B. Yes, it will C. No, it isn't D. No, it won't

35. -I think people will have less free time in the future.

-______. With robots' help, people will have more free time.

A. I hope so B. I don't know C. I think so D. I don't agree

Ⅵ. 完形填空 (每小题1分，共10分)

先通读下面的短文，掌握其大意，然后从A、B、C、D四个选项中选择可以填入空白处的最佳答案。

易读度★★☆☆☆

　　Today some students get together to talk about the future. 36 will the future be like? The students make 37 about it. Listen to them:

" 38 New York City keeps going the way it is, it will be more crowded and polluted, with worse air and more litter (垃圾). We need to learn to 39 the