I.1-6 CACAAA
II. 1. enough 2. dustbin 3. cause 4. necessary 5. energy
III. 1. is bad for 2. in thedaytime 3. walk on 4. to give up smoking 5.throwabout
IV. 1. Wash 2. Don’t stay 3. Does, give 4. Is, good or bad
V. 1. relax 2. coughs 3. smoking 4. cause 5. give
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