whould you please tell me _____ next?A,how to do B,what to do C,what do i do D,how i should do

whould you please tell me _____ next?A,how to do B,what to do C,what do i do D,how i should do
whould you please tell me _____ next?
A,how to do B,what to do C,what do i do D,how i should do

whould you please tell me _____ next?A,how to do B,what to do C,what do i do D,how i should do
whould you please tell me _what to do____ next?

what

Would you please tell me what's the next?是一个词组还是一个单词，词组的话可以选what吧疑问代词，单词的话选择介词after吧。。。