—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
网友回答
(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（回答sorry）;B 当然不；C一点也不；D不用谢（回答thank you）.结合句意可知A正确。句意：—对不起，我又犯错了。—没有关系。多练习，你会成功的。