[General] Can somebody help me correct these sentences?

[scott833]

1) Passenger are advised to leave the plane through or by the front door.
2) Please use the back door to leave the room.
3) We can go to the garden by taking this path/way.
4) We can go to the garden by this way/path.

 

[kfredson]

1) Passenger are advised to leave the plane through or by the front door.
2) Please use the back door to leave the room.
3) We can go to the garden by taking this path/way.
4) We can go to the garden by this way/path.

They are all fine. In the first sentence you would, of course, use either through or by, but not both.