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1. Air pollution has many effects____ the environment and living organisms.

A. in                    B. of                    C. for                             D. on

2. The volcano has erupted approximately once every ten years_________ 1970.

A. since               B. in                     C. from                D. for

3. The heavy rain has caused .................. in many parts of the country.

A. storms                  B. floods             C. drought           D. snowstorm

4. The air has been polluted ...........................  emissions from car engines.

    A. since           B. because           C. because of                D. due of

5. There was a big typhoon in my area. It caused extensive damage to our ..........

    A. property               B. furniture                   C. wealth             D. savings

6. By the time we got to the cinema, the film ................

    A. started                  B. had started               C. starting           D. was started

7. "It's hard to say" is used when you ..............

    A. can't say a word.                     B. want to say something hard

    C. find it hard to say yes.  D. find it hard to express your opinion on something.

8. If I go shopping, I ………some food.

    A. buy             B. will buy                   C. would buy      D. would have bought

9. Too much carbon dioxide in the atmosphere causes global.................

    A. warm          B. warming                   C. warmly            D. warmth

10. The flight number 781 to Melbourne arrives ............ 9 o'clock tomorrow morning.

    A. at                 B. in                     C. on                    D. by