He the test, but he wasn’t careful enoughA.was able to passB.must have passedC.c
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He ___________ the test, but he wasn’t careful enough
A.was able to pass
B.must have passed
C.could have passed
D.might be able to pass
试题答案
C
考查虚拟语气。句意：他本来能够通过考试，但是他不够细心。“would+have+done”表示对过去事情的假设，表示本来会做而没有做的动作。联系句子意思可知选C。