— Obama won the election. It’s amazing!— Yes. But the result was within ______ we had expected, ______ brought great joy to many young people and the black.

Do you think the reason ________ he gave is believable?

A nest is to a bird ______ a house is to a man.

____ the flight to Beijing will be delayed is ____ I’m especially worried about.

After five years of preparation，Shanghai presented the world ______ many said was the greatest Special Olympics.