题目内容
【题目】Tom __________ in the library every night over the last three months.
A. works B. worked
C. has been working D. had been working
【答案】C
【解析】句意:在过去的三个月里,汤姆一直每晚都在图书馆工作。根据时间状语over the last three months及语境可知用现在完成进行时,故选C项。
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