I______my wallet when I was shopping in the store.A、must have droppedB、should h

游客2025-03-01 18

问题 I______my wallet when I was shopping in the store.

选项 A、must have dropped
B、should have dropped
C、could drop
D、ought to have dropped

答案 A

解析该句从句是过去时态，因此应该用dropped，因此选A，其他选项不符合题意。

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