—Jack fell off the bike yesterday, but he is all right now. —What a lucky dog! He______himself badly.

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问题 —Jack fell off the bike yesterday, but he is all right now. —What a lucky dog! He______himself badly.

选项 A、should have injured
B、might injure
C、should injure
D、could have injured

答案D

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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