-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. 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。
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