Mary told me that she _____in the chemical for two more moths before quitting.
Mary told me that she _____in the chemical for two more moths before quitting.
A had worked B woulsd work C had been working D must have worked .老师给的答案是选B为什么不选A
A had worked B woulsd work C had been working D must have worked .老师给的答案是选B为什么不选A
英语人气：208 ℃时间：2019-08-20 03:03:41
优质解答
two more moths表示他还要再努力两个月,主句是过去时,所以是过去的将来would work
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