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题型：单选题 题类：常考题 难易度：普通
（新版）人教新目标版（Go for it）九年级下册Unit 13 We're trying to save the earth! Section B (la～3b)同步测试
— .
—But you'd better ________ first. I think it is a little large for you.
— ___________________ . It's for the elderly only.
—_____. They can learn a lot from working.
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