语法与词汇
The student said there were a few points in the essay he _____ impossible to comprehend.
A、
has found
B、
was finding
C、
had found
D、
would find
【正确答案】
C
【答案解析】
句意：这个学生说，他发现这篇文章里有几点很难理解。这句话中“发现”这个动作发生在“said”之前，因此应该用过去完成时。
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