—Did you spend a lot of time looking for the lost child?—. It took us half a month but lu

问题补充：

—Did you spend a lot of time looking for the lost child?

—. It took us half a month, but luckily we found him.

A. My pleasure

B. Absolutely

C. Not at all

D. Don’t mention it

答案：

A. My pleasure

(答案→)B. Absolutely

C. Not at all

D. Don’t mention it

解析：上文意思是，你们花很长时间来寻找这个丢失的孩子了吗？下文意思是，绝对地。花费了我们半个月的时间，但是非常幸运的是，我们找到了他。My pleasure我很愿意 absolutely意为当然，完全正确。Not at all别客气，根据答句的后面一句话可以判断，答案为B。最符合题意。