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My wallet is nowhere to be found; ______ while I was on the bus.A、should I dropp
My wallet is nowhere to be found; ______ while I was on the bus.A、should I dropp
游客
2023-09-23
59
管理
问题
My wallet is nowhere to be found; ______ while I was on the bus.
选项
A、should I dropped it
B、I must have dropped it
C、I ought to have dropped it
D、I had been dropping
答案
B
解析
must have done表示对过去发生的事情的肯定判断。
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