—Who______ it be that is knocking at the door? —It ______ be Father, but I’m not sure. A. can; must ...
2023-01-03 23:54:14 195次 重庆市名校联盟2009-2010学年高一下学期第二次联合考试英语试题 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
—Who______ it be that is knocking at the door?
—It ______ be Father,
but I’m not sure.
A. can; must B.
can; may C. must; can D.
may; must
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