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Mary has got a furl mark in the test. She ______ very hard all the time.A、will w
Mary has got a furl mark in the test. She ______ very hard all the time.A、will w
游客
2023-09-23
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问题
Mary has got a furl mark in the test. She ______ very hard all the time.
选项
A、will work
B、must have worked
C、may work
D、could have worked
答案
B
解析
must have done表示对过去情况的推测,例如:Her eyes are red.She must have been crying。(她的眼睛红了,一定是哭过了。)D项could have done译成“本可以”,不合题意,故选B。
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