—The world is becoming smaller and smaller because of the Internet.— .
There is an old bridge ____ the river.
Yao Ming is a popular basketball player ____ the Chinese people.
----How old are you? ----I’m fifteen. I was born ________ 1990.
I study for a test _________ working with a group.
A tsunami(海啸) happened in some southern Asian countries________ December, 2004.