THE AIR HAS BECOME MORE AND MORE POLLUTED BECAUSE OF EXHAUST FUMES...

30.

The air has become more and more polluted because of exhaust fumes from vehicles.

A. preserved

B. wasted

C. contaminated

D. conserved

ELIB.VN: THƯ VIỆN TRỰC TUYẾN MIỄN PHÍ

40

Choose the underlined word or phrase in each sentence that needs correction.