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She______fifty or so when I first met her at the conference. (2009年考试真题)A、must b
She______fifty or so when I first met her at the conference. (2009年考试真题)A、must b
游客
2023-11-13
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问题
She______fifty or so when I first met her at the conference. (2009年考试真题)
选项
A、must be
B、had been
C、could be
D、must have been
答案
D
解析
本题考点为情态动词must+have done,表示对过去某种情况肯定性的推测。
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