Hurry up, Jack. We have to get to the station before 11:45 ________ we can catch the 12:00 train.[ ]

Rose, mind your step! Aunt Jane slipped over on the wet floor and broke her leg yesterday． — ______．

Tibet has been a part of China since _________ years ago.

If Iyou, I the army.

Carl has breakfast at 7:30 am every day.