【題目】 They ______ on the project for almost one month before I joined them, and now we ______ on it as no good results have come out so far.

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

【答案】A

【解析】

試題分析：句意：在我加入前他們已經(jīng)進(jìn)行了將近一個(gè)月了，到目前我們還在進(jìn)行因?yàn)檫�沒(méi)有出來(lái)好的結(jié)果。第一句兩個(gè)動(dòng)作有先后，joined是過(guò)去時(shí)，work發(fā)生的早用過(guò)去完成時(shí)，根據(jù)句意他們一直在做，故用過(guò)去完成進(jìn)行時(shí)。第二空是now,用現(xiàn)在進(jìn)行時(shí)。故答案為A.

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