Вставить: an,in,by,of he's traveling the 8 o'clock train she is afraid of traveling plane do not lean window pavement

He,s traveling on the 8 o,clock train. She is afraid of traveling by plane. Do not lean out of the window.Walk in the pavement.

He's traveling on the 8 o'clock train

She is afraid of traveling by plane

Do not lean out of the window

Walk in the pavement