---Thank you for helping me.---__________.
Take a boat trip, ________ you will be attracted by the beauty of the Li River.
Don’t leave your seat ________ all the papers have been collected by the teacher.
Mr. White can always make us relaxed. He is _________ teacher I have ever met.
Both of my sisters are teachers. One is a Chinese teacher, and ________ teaches English.
Those who are responsible ________ the death in the plane crash should be punished.