We have been ______for several hours but we have not yet reached any conclusion.A.working it out B.working out it C.working on it D.working it on

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We have been ______for several hours but we have not yet reached any conclusion.A.working it out B.working out it C.working on it D.working it on
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We have been ______for several hours but we have not yet reached any conclusion.A.working it out B.working out it C.working on it D.working it on
We have been ______for several hours but we have not yet reached any conclusion.
A.working it out B.working out it C.working on it D.working it on

We have been ______for several hours but we have not yet reached any conclusion.A.working it out B.working out it C.working on it D.working it on
选C,work on从事,进行的意思,而work out是算出,计算出的意思,与句意不符.句子的意思是:我们已经进行工作几个小时了,但是还没有得出结论.



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C

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