They _____ on the program for almost one week before I joined them, and now we _____ on it as no good results have come out so far. -题库考试答案搜索网

They _ on the program for almost one week before I joined them, and now we _ on it as no good results have come out so far.

单选题

2022-03-07 16:53

A、had been working; are still working
B、had worked; were still working
C、have been working; have worked
D、have worked; are still working

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正确答案

A

试题解析

题干中前半句出现for应该用过去完成时，后半句出现now应该用现在进行时。句意为：在我加入他们之前他们就已经研究这个项目将近一个星期了，现在我们依然在研究这个项目，因为至今还没有出现什么好的结果。

标签：中学教师资格证初中教师专业知识

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