2. 外语
  3. I didn’t see her in the meeting room this morning. She ______ at the meeting.

I didn’t see her in the meeting room this morning. She ______ at the meeting.

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问题 I didn’t see her in the meeting room this morning. 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 虚拟语气。must表示推测时不用于否定句；shouldn’t have done sth．表示“本不应谊做某事而实际上做了”； needn’t have done sth．表示“本来不必做某事而实际上做了”；couldn’t have done sth．表示“不可能做过某事”。
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