—Mom, can I watch TV? —Yes, but you must
题型:选择题
问题:
—Mom, can I watch TV?
—Yes, but you must do your homework _________ you can watch it.
A.before
B.after
C.because
D.or
—Mom, can I watch TV?
—Yes, but you must do your homework _________ you can watch it.
A.before
B.after
C.because
D.or