16. Choose the answer which correctly completes the sentence. Nowadays, the use of recycled paper which conserve the world's diminishing forest resources.

A) had increased/will help B) would increase/had helped D) will increase/has helped

C) is increasing/ helps

17 Choose the answer which correctly completes the sentence. man, woman, and child in the US should wear a seat belt.

A) All

B) Each of

C) No

D) Every

18. Choose the answer which correctly completes the sentence. The number of people who go to the cinema... since the great days of Hollywood in the 1930s and '40s

A) has declined

C) were declining

B) have declined

D) to decline