2. 外语
  3. I didn’t see her in the meeting-room this afternoon. She______at the meeting.

I didn’t see her in the meeting-room this afternoon. She______at the meeting.

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问题 I didn’t see her in the meeting-room this afternoon. She______at the meeting.
选项 A、mustn’t have spoken
B、shouldn’t have spoken
C、needn’t have spoken
D、couldn’t have spoken
答案D
解析 考查“情态动词+完成体”的用法。didn’t表明事情发生在过去，对过去情况的否定推断，要用couldn’thave done，故选D。must have done一般用于肯定句，表示对过去肯定的推测；shouldn’t have done表示“本不应做某事而做了”；needn’t have done“本不必做某事而做了”。
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