—Who______ it be that is knocking at the door?—It ______ be Father, but I’m not sure._刷题宝

题干

—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; ca

D：may; must

上一题下一题 0.0难度选择题更新时间:2019-03-16 04:14:22

答案(点此获取答案解析）

B

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