The passengers should wait in when they want to get on the plane.A. this wayB. lineC. dan

问题补充：

The passengers should wait in when they want to get on the plane.

A. this way

B. line

C. danger

D. hope

答案：

A. this way

(答案→)B. line

C. danger

D. hope

解析：句意：乘客们排成一行等待当他们想要上飞机的时候。短语：in line 排成一行，所以选B。