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She ______ on this essay for twenty minutes but she has written only about a hun
She ______ on this essay for twenty minutes but she has written only about a hun
游客
2025-03-10
29
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问题
She ______ on this essay for twenty minutes but she has written only about a hundred words.
选项
A、will be working
B、worked
C、has been working
D、will have worked
答案
C
解析
时态用法。根据句意和时间状语for twenty minutes,可以判断这里应填入现在完成时态,现在完成进行时是现在完成时态的强调形式,并且选项中没有现在完成时态,所以C是正确答案。
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