题目内容
9. ―Sorry, Mum. I got a G in the exam.
—You have done better, but you didn't try your best.
A. would B. must
C. could D. shall
9. C考查虚拟语气中的含蓄条件句。句意:"对不起,妈妈,我考试得了个C。""你本来可以做得更好的,但是你没有尽最大努力。"if引导的非真实条件句表示对过去的虚拟时,从句中用 had done,主句用"would/could/should/might + have done".本题从语境来看,妈妈带有责备的语气,故could为最佳答案,选C。
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