【題目】 --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】

試題分析：考查虛擬語氣。句意∶杰克昨天從梯子上掉下來了，但是他現(xiàn)在都沒事。多幸運(yùn)啊，他本來應(yīng)該傷的很重的。could have done…本可以做而沒做。故選B。

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