CHOOSE A, B, C OR D TO COMPLETE THE FOLLOWING SENTENCE

13. Choose A, B, C or D to complete the following sentence:

If

factories

have

better

methods

to

protect

the

environment,

________________________.

A. we won’t have to suffer the air pollution.

B. we won’t have to suffer from the air pollution

C. we wouldn’t have to suffer the air pollution

D. we wouldn’t have to suffer from the air pollution