题干
-
-- Jack fell off the ladder yesterday, but he is all right now.
---What a lucky dog! He _________ himself badly.
-- 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(点此获取答案解析）
B