1.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

2. 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

3. If we plant more trees in our neighborhood, the atmosphere will ___ more comfortable.

A. become

B. becomes

C. became

D. be become

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

A. Will/go

B. Will/to go

C. Do/go

D. are/go

5. 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

Because :

=> If + S + V , S + will + V hoặc S + will + V If + S + V , S + will

#anhanh