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.throw about
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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