【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:杰克昨天从梯子上摔下来了,但是他现在很好。多幸运啊!他本来可能会受到重伤。对过去事实的虚拟,是一种可能性,故选B项。