I. Choose the word or phrase that best completes each sentence below.

1. We should use _______ shopping bag to protect the environment.

A. reusable

B. reused

C. reusing

D. reuse

2. Nowadays, people are using more ______ cosmetics.

A. nature

B. naturally

C. natural

D. unnatural

3. Air ______ is a serious problem that our city is facing due to our own activities.

A. pollute

B. polluted

C. pollution

D. pollutant

4. ___ bags should be banned because the use of them pollutes our land and water seriously

A. glass

B. wooden

C. garment

D. plastic

6. Our water bill ______ really high this month if you always forget to turn off the tap after taking baths.

A. will be

B. will is

C. will not be

D. will is not

7. If you ____ your plastic water bottles to make flower pots, it will be a great idea.

A. will reuse

B. reuse

C. reused

D. reuses

8. If we ____ to go to school this afternoon, I and my friends will go to collect waste paper to create fund for the charity group.

A. have

B. doesn't have

C. don't have

D. do have

9. If we plant more trees in our neighbourhood, the atmosphere will ________ more comfortable.

A. become

B. becomes

C. became

D. be become

10. _______ you _______ hiking in the mountains if it rains tomorrow?

A. Will/go

B. Will/to go

C. Do/go

D. are/go

11. If you throw rubbish in the river, there ______ no place for fish to live in.

A. will are

B. will is

C. will be

D. will do