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题型：单选题 题类：常考题 难易度：普通
初中英语冀教版七年级英语下册Unit 8 Lesson 44 Volunteering in Summer同步练习
— No, shorter than that now, about half an hour.
visit, all kinds of , do some shopping, ask…to, help…with, share…. with, something wrong, social worker
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