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题型:单选题 题类:常考题 难易度:普通
—-Sorry, I didn't notice that sign just now.
— It ______ him. He has gone to Canada for his holiday.
She may{#blank#}1{#/blank#} {#blank#}2{#/blank#}a cut like that.
—I'm sorry, it _____ be her. I saw her staying at school half an hour ago.
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