—-I’m sorry, but I thought I could finish it in three days．
---- ．After all, you have tried your best．
A. That's not the point
B. Certainly not
C. Never mind
D. Don’t mention it
网友回答
A. That's not the point
B. Certainly not
(答案→)C. Never mind
D. Don’t mention it
解析：句意：对不起，--但我认为我可以在三天内完成它。-- ,毕竟你已经尽力了。A．That's not the point 那不是重点，B．Certainly not 当然不，C．Never mind 没关系，D．Don’t mention it不用谢，这题主要是回答：-I’m sorry,所以选C。