练习册

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    I was invited to give a talk at the meeting. 昨天我应邀在会上发言． e. cost, take, pay, spend cost v. 花费金钱,时间,劳力, 事物作主语 n. 作名词时表示`成本’.`价钱 .“费用’.用作可数或不可数名词． living costs生活费用 the cost of a book一本书的成本 What's the cost of the car? 那辆汽车得花多少钱? take 花费时间, 事物作主语 【查看更多】

     

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