题目内容
() 17. They failed to pass the exam last time. I regretted them.
A. to be not able to help B. being not able to help
C. not being able to help D. not be able to help
17.C
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题目内容
() 17. They failed to pass the exam last time. I regretted them.
A. to be not able to help B. being not able to help
C. not being able to help D. not be able to help