When I try to find ______that prevent so
题型:选择题
问题:
When I try to find ______that prevent so many people from taking part in the program, it seems to me that there are two main causes.
A.why it does
B.what it does
C.what it is
D.why it is
When I try to find ______that prevent so many people from taking part in the program, it seems to me that there are two main causes.
A.why it does
B.what it does
C.what it is
D.why it is