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题型：单选题 题类：常考题 难易度：困难
人教版PEP 英语六年级上册 Unit 3 My weekend plan Part B 同步训练
A:{#blank#}1{#/blank#} is the snake?
B: It's{#blank#}2{#/blank#}the rock.
in, on, to, at, from, behind, for
—It's {#blank#}1{#/blank#} the box.
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