中学英语问题一道 ,he _____ very hard because he looked very tired.a must have worked b had to work c need have worked d needed to work
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中学英语问题一道 ,he _____ very hard because he looked very tired.a must have worked b had to work c need have worked d needed to work
中学英语问题一道 ,
he _____ very hard because he looked very tired.
a must have worked
b had to work
c need have worked
d needed to work
中学英语问题一道 ,he _____ very hard because he looked very tired.a must have worked b had to work c need have worked d needed to work
A 肯定做过某事用must have done.这里的意思是,他肯定工作得非常辛苦因为他看起来很累.