1. Can you turn ………….. the light? It's too dark.
A. on B. off C. in D. for
2. What are you looking …………..? . My picture book. I've lost it.
A. on B. off C. in D. for
3. There are…………saving methods and inventions to use solar energy.
A. energetic B. energize C. energy D. energetics
4. I had to pay much money this month for the international ……………
A. calls B. calling C. to call D. called
5. A new air-conditioner will be………….. this morning.
A. to install B. installed C. installing D. install
6. Scientists are looking for an………….. way to reduce energy consumption
A. effect B. effection C. effective D. effectively
7. We can………….. easily in the daylight.
A. to read B. reading C. readed D. read
8. She won't take all these suitcases………….. she likes to travel light.
A. so B. but C. because D. therefore
9. They are completely short of water now. A number of people have died because of this …
A. shortage B. short C. shorten D. shortly
10. What can we do to spend less………….. lighting?
A. in B. on C. about D. of
