______for the timely investment from the public, our company would not be so booming now.

第四部分：单项选择（共10小题，每题1分，共10分）

______ 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

______for the timely investment from the public, our company would not be so booming now.

A. Had it not been   B. were it not               C. If it was not    D. Be it not

______for the timely investment from the public, our company would not be so booming now.

A．Had it not been        B．were it not             C．If it was not         D．Be it not

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