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-I can't find my wallet. -You it on the bus. A. must forget B. must leave C. mus

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-I can't find my wallet. -You it on the bus. A. must forget B. must leave C. mus

—I can't find my wallet.

—You ________ it on the bus.

A. must forget

B. must leave

C. must have forgotten

D. must have left

 

试题答案

答案:D

解析:

Must+完成时态,表示对过去事情的肯定推测。