问题
选择题
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
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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：A