题目内容
He ________ the exam, but he was too careless.
| A.could have passed | B.couldn’t have passed |
| C.must have passed | D.may have passed |
A
试题分析:此处could have passed the exam表示本能通过考试,实际上没有。句意:他本能通过考试的,但是他太粗心了。
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