问题
He told me that by the end of this year they______together for twenty years．
A:would work
B:had been working
C:will have worked
D:would have been working
B:had been working
C:will have worked
D:would have been working
正确答案是：
同类题型
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was younger, I’d often go for _____ drive withsome friends, purely for _____ enjoyment of it
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