-- My model plane has disappeared, mum. I Who ______ have taken it?

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问题 -- My model plane has disappeared, mum. I Who ______ have taken it?

选项 A、should
B、must
C、could
D、might

答案C

解析在肯定句中表猜测用may，might和must，在否定句和疑问句中表猜测用can或 could。此处could have done表示对已经发生的情况的推测。

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公共英语二级笔试

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