完成句子。（每空1分，共8分）

根据所给提示，完成句子。每空一词，含缩略词。

小题1:Chen Ping has already finished her homework. (改为否定句)

Chen Ping ___________  ____________ her homework yet.

小题2:The kid is playing the piano at the school music club. (对划线部分提问)

_____________ is the kid ____________ the piano?

小题3:I made up my mind to study math well. (改为同义句)

I ____________  ____________ study math well.

小题4:他代替我去了北京(完成译句)

He went to Beijing __________  __________ me.