题目内容
--- Is that your father working in the garden outside?
--- It __________ be him. He is helping mother with dishes now.
A. must B. can’t C. may D. mustn’t
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题目内容
--- Is that your father working in the garden outside?
--- It __________ be him. He is helping mother with dishes now.
A. must B. can’t C. may D. mustn’t