Could you check these sentense for me?

[liuchunsheng123456]

1) The train is staying at the station until the other train arrives at 9 o'clock. 2) The train is staying at the station until the other train arrives. 3) The train is staying at the station until 9 o'clock. Are these three all right?

[Rusty]

1) The train is staying at the station until the other train arrives at 9 o'clock. 2) The train is staying at the station until the other train arrives. 3) The train is staying at the station until 9 o'clock. Are these three all right?
Yes, they are all right.