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】考查时态，题干中出现的over the last three months，用于现在完成进行时或现在完成时。所以答案是C。
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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】考查时态，题干中出现的over the last three months，用于现在完成进行时或现在完成时。所以答案是C。