—They haven’t finished the work up to now. —Well, they ______.

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问题 —They haven’t finished the work up to now.   —Well, they ______.

选项 A、should
B、should have
C、would
D、must have

答案B

解析 上句意思是:他们到现在还没有完成工作。should have done意为“本应该做某事(但实际上没做)”,符合题意,下句意思是:他们应该完成了(却没完成)。
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