Don't push,let's get on the bus_____.on turn in turn by turn turn by turn

Don't push,let's get on the bus_____.on turn in turn by turn turn by turn
Don't push,let's get on the bus_____.
on turn
in turn
by turn
turn by turn

Don't push,let's get on the bus_____.on turn in turn by turn turn by turn
turn by turn.不要相信其他人.哥是大神.

选B。 in turn 轮流；按次序
by turn 时而
翻译： 别挤！我们按次序上车！

in turn 挨个儿
别推，咱们挨个儿上车

turn by turn.