56. for our teachers we’d never have been able to enter this university.A. Had it not be

问题补充：

56. for our teachers, we’d never have been able to enter this university.

A. Had it not been

B. Had it not

C. If it was not

D. If he had not been

答案：

(答案→)A. Had it not been

B. Had it not

C. If it was not

D. If he had not been

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