Look at these dark clouds.I am afraid it ________ soon.So don't forget your umbrella.

A. is raining B. rains C. is going to rain D. was raining

（题文） is one of the four great inventions of ancient China.

A. The car B. The train

C. Paper-making D. The computer

You can read all kinds of books ________ computers in 10 years.

A. in B. on C. at D. of

—If there are __________people driving , there will be _________air pollution.

—Yes, the air will be fresher.

A. less ; less B. less ; fewer

C. fewer ; fewer D. fewer ; less

—Do you think that there will be more trees in the mountains? —________

A. I hope so. B. Yes，I hope not.

C. Oh，really? D. Yeah，there will be fewer trees.

We love________．We don't like the war (战争)．

A. culture B. peace C. battle D. history

Please wait. She ________ to you in a few minutes.

A. talk B. talked C. have talked D. will talk

If people keep ________ the river, there will be no fish in the river.

A. polluting B. pollute C. polluted D. to pollute

There will be _______ jobs for people because some robots will do the same jobs as people.

A. many B. more C. fewer D. fewest

More and more people can ________ over 100 years old in the future.

A. live for B. live in C. live to be D. live be