What do you think of the EXPO 2010？— It’s great， of course. people are going to Shanghai for the EXPO 2010.

I had tomy little sister when my mother was not at home.

Though I ______ the telephone number many times, the foreigner couldn’t write it down.

What do you think of Jay Chou’s song ?—I think it’s ________best song in the world. Isn’t it _______ beautiful one?

Mr Green didn’t know ______ last night.