I tried to persuade him to give up the foolish idea, but in ________, and now he begins to regret.

A. vain          B. turn         C. return      D. case

I tried to persuade him not to keep in touch with her, but what I said was always ______.

__________him not to do so, he wouldn’t have made such a serious mistake.

A. Did I persuade?? ????????????? B. If I persuade??? ????????????? C. If I should persuade???? D. Had I persuaded

I tried to persuade him not to keep in touch with her, but what I said was always ______.

A．accepted　　　                        B．received

C．ignored                               D．Noticed

We tried ______ to persuade him to stay home, but at last, he went to the construction site despite his bad illness.