—Jack fell off the bike, but he is all right now.
—What a lucky dog! He ______ himself badly.
A、
should have injured
B、
might injure
C、
should injure
D、
could have injured
【正确答案】
D
【答案解析】
本题考查情态动词的用法。could have done表示对过去情况的推测。
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