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They ______ on the program for almost one week before I joined them.A、had been w
They ______ on the program for almost one week before I joined them.A、had been w
游客
2025-07-30
13
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问题
They ______ on the program for almost one week before I joined them.
选项
A、had been working
B、bad worked
C、have been working
D、have worked
答案
A
解析
根据句意应该选过去完成进行时，表示work on这个动作在 joined以前发牛，而且．我加入以后还在继续，故用过去完成进行时。答案为A。
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