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She______fifty or so when I first met her at the conference.A、must beB、had been
She______fifty or so when I first met her at the conference.A、must beB、had been
游客
2023-11-21
49
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问题
She______fifty or so when I first met her at the conference.
选项
A、must be
B、had been
C、could be
D、must have been
答案
D
解析
对过去肯定的推测,用must have done形式,故答案为D。
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