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Mary has got a full mark in the test. She______very hard all these days.
Mary has got a full mark in the test. She______very hard all these days.
admin
2015-05-14
18
问题
Mary has got a full mark in the test. She______very hard all these days.
选项
A、will work
B、may work
C、must have worked
D、could have worked
答案
C
解析
句意:玛丽考试得了满分,这些天她一定很用功。该题考查的是情态动词+动词完成式的用法。must have done表示对过去事情的肯定推测,意为“一定……”;could have done表示“过去本能够做某事,但事实上并未做”。A选项中的will用于一般将来时,意为“将要……”,不合题意;B选项中的may表示“可能,也许”,表推测时语气较轻,也不符合题意。因此,本题的正确答案为C。
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本试题收录于:
英语题库普高专升本分类
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英语
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