I want to ring him___to know the reason
题型:选择题
问题:
I want to ring him___to know the reason why he rang___while I was speaking yesterday.
A.up; off
B.back; up
C.up; down
D.on; off
I want to ring him___to know the reason why he rang___while I was speaking yesterday.
A.up; off
B.back; up
C.up; down
D.on; off