But i dont know_______to do.选填：A:What B:How

But i dont know_______to do.选填：A:What B:How i like a gril,but she dont not like me,what shuld i do ( ) can i do?填what 还是how I really don't know -----with it.A .what to do B.how to do 选 Dont you bother what I do.Like a I dont know what is you want to do.But I believe I will to h I dont know what to do.在这里为什么不能把what改为how I really do not know A what to do B how to do c how can i do I really don`t know_____ A.what to do it B.how to do C.what __________?I have a toothache.A how do you do B what is trou i dont care what do u i dont know what do you say