It is pointless to try to make him change his mind.

A. It is a waste of time trying to make him change his mind.

B. It is a waste of time to try to make him change his mind.

C. There is no time to try to make him change his mind.

D. There is no time trying to make him change his mind.

Đáp án
A. It is a waste of time trying to make him change his mind.

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