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题型：单选题 题类：常考题 难易度：普通
人教版PEP英语六年级上册 Unit 2 Ways to go to school Part C同步训练
— _____________.
—Where is the mouse?
— It's {#blank#}1{#/blank#} the box.
on, in, under, off, at, next to, to
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