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题型：单选题 题类：常考题 难易度：困难
人教版（PEP）小学英语五年级下册期末测试卷
① can't{#blank#}1{#/blank#} ② I'd {#blank#}2{#/blank#}③ aren't{#blank#}3{#/blank#}④ they're{#blank#}4{#/blank#}⑤ let's{#blank#}5{#/blank#}⑥ wasn't{#blank#}6{#/blank#}
—She's ______ sister.
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