—Can you tell me ?
— With Lucy’s help.
A. when you did it so well
B. when did you do it so well
C. how you did it so well
D. how did you do it so well
网友回答
A. when you did it so well
B. when did you do it so well
C. how you did it so well
D. how did you do it so well
解析：考查宾语从句的用法。根据答语判断，做得好是在Lucy的帮助下，用how提问比较恰当；宾语从句要用陈述语序，排除D。故选C。