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【题目】 --Jack fell off the ladder yesterday, but he is all right now.

--What a lucky dog! He ______ himself badly.

A. should injure B. could have injured

C. should have injured D. might injure

【答案】B

【解析】

试题分析∶考查虚拟语气。句意∶杰克昨天从梯子上掉下来了,但是他现在都没事。多幸运啊,他本来应该伤的很重的。could have done…本可以做而没做。故选B。

考点∶考查虚拟语气

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