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cleaner cleans streets.2. b. A cook works in a canteen.3. c. A worker works in a factory.4. d. A driver drives a bus, a car or a taxi.根據(jù)要求寫單詞。7. clean (名詞) ______8. friend (形容詞) ______9. buy (反義詞) ______10 Mr (反義詞) ______11. policeman (工作地點) ______選詞填空。cook busy peo