I don't understand _______ believe him.
题型:选择题
问题:
I don't understand _______ believe him. [ ]
A. why don't you
B. why you not
C. why you don't
D. why not you
I don't understand _______ believe him. [ ]
A. why don't you
B. why you not
C. why you don't
D. why not you