【題目】—The man fishing near the river ________ be my uncle, but I'm not sure.

—That ________ be him. I saw him at the store just now.

A. might; must B. can't; might C. must; can't D. might; can't

【答案】D

【解析】

考查情態(tài)動詞。第一句話中的“I'm not sure”表明只是一般的推測，用may或might可能；由答語第二句話“我剛才在商場里看到他了”可知，在河邊釣魚的那個人“不可能”是他。can't不可能，must必須，一定；故選D。

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