1. If people solve the problem of smoke from vehicles and factories, the air _____ pure and fresh.

A. is B. was C. will be D. would be

2. If you post false information on the Internet, you _____fined.

A. gets B. got C. would get D. will get

3. I believe that if all the people _____ the government’s instructions, we ____COVID-19 from spreading.

A. don’t follow/ will prevent

B. followed/ will prevent

C. follow/ would prevent

D. follow/ will prevent

4. Do you think there would be less conflict in the world if all people _____ the same language?

A. spoke B. speak C. had spoken D. will speak

5. If our schools are still closed because of the pandemic, we _____to study online.

A. wouldn’t B. would try C. tried D. will try

6. If I ____you, I ____many subjects online instead of playing video games.

A. was/ will study B. am/ will study C. were/ would study D. am/ would study

7. If people need more paper, more trees _____.

A. will cut down B. cut down C. will be cut down D. are cutting down