—Onmywaytothebookstore,IsawMaryhangingoutwithherfriend...
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问题详情:
—On my way to the bookstore, I saw Mary hanging out with her friends.
—It ____________be her. She has gone to Beijing.
A. can't B. mustn't C. might D. could
【回答】
A
知识点:情态动词
题型:选择题