题目内容
―Are you doing well in your math?
―No, I my best, but I still can′t get good marks.
A. am trying B. tried C. have tried D. will try
C 【解析】句意:——你数学学得好吗?——不好,我已经尽力了,但我仍然不能得到好成绩。A. am trying现在进行时;B. tried一般过去时;C. have tried现在完成时; D. will try一般将来时。try one's best“尽力…”;根据句意可知是“努力”这个动作从过去开始一直持续到现在,而且可能会继续持续下去,所以用现在完成时,故答案选C。
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