Which of the two sweaters would you like—Well, I have no idea. _____of them look nice.

The day will come _____ the people all overthe world will get rid of poverty.

I’m going to be a teacher ________ I grow up.

If you are travelling _______the customs are really foreign to your own, please do as the Romans do.

My cousin is in _________ in Shanghai No.11 Middle School.