Which of the two subjects do you like, art or music?—-______.They are really interesting.

Could you _____ me something about your English teacher?-Sure.She is nice and kind to us.

Why didn’t you answer my phone call, Jack?—I’m sorry, but I ________ then.

There _______ a number of volunteers in the club and the number of them _______ growing larger and larger.

The Shanghai Expo opened ______ May l, 2010.[ ]