my model plane is broken. i donot know_____ a.what to do b.h

my model plane is broken. i donot know_____ a.what to do b.h I really don't know_____.A.what should I do B.what to do C.w I really don`t know_____ A.what to do it B.how to do C.what Do you know_____?A、what wrong is B、what is matter C、what is Do you know_____.---He is a driver.a.what he is b.who he is Do you know_____?----he'Tom'father.a.what he is b.who he is What am i to do with a broken heart? My watch is broken.I want to know how to make it__?A.work B. i'm busy learning()the model plane.A.to play B.playing C.to A:What are you doing?B:I'm r_______ my plane.S___ is wrong w 英语选择,填空,l really donot know＿＿＿ about it.A.what to do B.to do He () a model plane when I came to see him.