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题型：单选题 题类：常考题 难易度：容易
鲁教版（五四制）七年级上册Unit 6 How often do you exercise? Period 2 Section A (Grammar Focus-3c) 同步练习
— Once a week.
—By bike.
—It's in the backpack(双肩背包).
—Practise writing them many times.
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