Could you tell me____ so well?
Without the teacher's help, it was impossible for me to get the prize.( )
A.how did you do itB.when you did it
C.why did you do itD.how you did it
Could you tell me____ so well?
Without the teacher's help, it was impossible for me to get the prize.( )
A.how did you do itB.when you did it
C.why did you do itD.how you did it