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职称英语
You______John in the street this morning. He’s been dead for ages.A、mustn’t see
You______John in the street this morning. He’s been dead for ages.A、mustn’t see
游客
2024-09-03
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问题
You______John in the street this morning. He’s been dead for ages.
选项
A、mustn’t see
B、mustn’t have seen
C、couldn’t see
D、couldn’t have seen
答案
D
解析
情态动词题。must have done表示对过去情况的肯定推测,而对过去情况的否定推测则用couldn’thave done,所以选[D]。
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