— Someone is knocking at the door. Is it Ann? — It _____ be her. She is giving a performance at the ...
2023-01-24 14:03:36 114次 2013-2014学年广东始兴墨江中学九年级下模拟3英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
— Someone is knocking at the door. Is it Ann?
— It _____ be her. She is giving a performance at the theatre now.
A. may B. must C. can’t D. mustn’t
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