I. Choose the best one (A, B, C or D) to complete the sentence or replace the underlined word: 1.At this time next week we to work to support the air pollution cutting down campaign. A. are cycling B. will be cycling C. will cycle D. will be cycled 2. Someone’s carbon is a measurement of the amount of carbon dioxidethat their activities produce. A. footprint B. energy C. effect D. amount 3. Remember to the lights before going to bed. A. turn on B. stop C.turn D. turn off 4. We will cut down in the use of natural gas because it is and harmful to the environment. A. available B. abundant C. plenty D. limited 5. Hydro power is because dams cannot be built in certain areas. A. abundant B. enough C.limited D.unlimited
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Sinh Học lớp 12
