II. Choose the best option to complete each of the following sentences.
1. _________ air is one of the many problems we have to solve.
A. Pure B. Polluted C. Dust D. Pleasant
2. “ ___________” means a piece of land full of rubbish.
A. junkyard B. treasure C. hedge D. stream
3. If you want to save money, you should ________the amount of water your family uses.
A. increase B. reduce C. adapt D. repair
4. You should get a (n)________to make sure there are no cracks in the pipes
A. plumber B. mechanic C. electrician D. consumer
5. In order to save electricity, an ordinary 100-watt light bulb can be replaced by a (n) ________.
A. energy-saving bulb B. energy-save bulb C. saving energy bul D. save-energy bulb
6. I’m disappointed _________ people have spoiled this area.
A that B. when C. if D. how
7. Minh’s English is excellent. He speaks________.
A. perfectly English B. English perfectly
C. perfect English D. English perfect
8. We couldn’t go on a picnic as planned __________ it was raining.
A. however B. but C. because D. so
9. If you are busy, we ________ this by ourselves.
A. will do B. did C. would do D. doing
10. Can you turn ________the light? -It’s too dark.
A. on B. off C. in D. for
11. I suggest ________showers instead of taking bath.
A. take B. taking C. to take D. to taking
12. Scientists are looking for an ________way to reduce energy consumption.
A. effect B. effects C. effective D. effectively
13. He was born ______ March 25 , 1992 .
A.at B.on C.in D.for
14. She is very tired. ________, she has to finish her homework.
A. Moreover B. so C. and D. However
15.- Is he an actor ________a singer? - An actor
A. and B. or C. with D. so
16. He was tired; ________he took a rest before continuing the work.
A. so B. and C. but D. if