My mother is always warning me when I go
题型：选择题
问题：
My mother is always warning me when I go out, “Don’t get off the bus ____it is stopping.”
A．until
B．before
C．while
D．After
My mother is always warning me when I go out, “Don’t get off the bus ____it is stopping.”
A．until
B．before
C．while
D．After