I hear that you have a brother, but I have never seen him. -He the hometown since many years ago.

We are sure the_________Olympic Games in Beijing next year will be one of_________games in history.

I’m glad you’ve come back from the United States. Please tell me how long you ____there.

The classroom is _________ clean _______ it was yesterday. ——Sorry, I forgot to clean it.

The black bag isn’t_______. It’s________.