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题型：单选题 题类：常考题 难易度：困难
鲁教版（五四制）七年级上册Unit 6 How often do you exercise? Period 1 Section A (1a-2d) 同步练习
一Perhaps you should what you've learnt in class as often as possible.
—Of course .He was _______a famous American writer.
—I ______ to study for the exam last night.
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