问题

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;
B:when did you do it so well
C:how you did it so well
D:how did you do it so well;
正确答案是:
同类题型
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