Teens spend too much time on the computer games! It’s become a big problem now.—Yes. They should stay away from the games____ it is too late!

What sport did you take part in yesterday— ____

. —When did Miss Wang leave the office—-She left ____you turn bake to write onthe blackboard

collected plenty of historical evidence, provedthat humans used to have different sleeping patterns.

The woman who’s carrying a baby in herarms, ____ aboard fist. Don’t crowd in!