—Sorry I made a mistake again. — Practice more and you’ll succeed.A. Never mindB. Certain

问题补充：

—Sorry, I made a mistake again.

— Practice more and you’ll succeed.

A. Never mind

B. Certainly not

C. Not at all

D. Don’t mention it

答案：

(答案→)A. Never mind

B. Certainly not

C. Not at all

D. Don’t mention it

解析：考察交际用语。A没有关系，不用紧；B当然不；C一点也不；D不要紧；句意：对不起，我又犯了错误。—没有关系，孰能生巧啊！你会成功的。故A正确。