单项选择题

（）for the fact that she broke her leg, she might have passed the exam.

A. Had it not been
B. Hadn’t it been
C. Was it not
D. Were it not

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单项选择题
（31）（）

A. improvement
B. victory
C. failure
D. achievement
单项选择题
He（）unwisely, but he was at least trying to do something helpful.

A. may have acted
B. must have acted
C. should act
D. would act
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