Hello，umi酱！
选B啊，用does这里看不出用过去时的理由do one's best是指尽力。这句话是说，我不觉得他尽力在做这份工作一句话里面，通常都是用一个时态的，除非有很明显过去这样，现在不这样，或者时间节点的表示
一叶扁舟85
权威答案: 四个选项都可以选!!!! 1.A.did I don't think he_________his best to do the job. 在评说他过去的工作 2.B.does I don't think he_________his best to do the job.对其一贯表现进行评价 3.C.didn't do I don't think he_________his best to do the job. 在评说他过去的工作,双重否定,表示肯定 4. D.doesn't do I don't think he_________his best to do the job.对其一贯表现进行评价.双重否定,表示肯定
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