—What is___________ river in China?
—The Yangtze River. It's about 6 , 300 kilometers long.
long
longer
longest
the longest
This is not my Walkman. It’s _________. Mine is over there.
—_________ model plane is this? —I think it’s Jim’s. Look, his name is on it.
If you _________ your name on the paper, you can get a magazine.
—Which country is the Great Wall in? —It’s in __________.
—Please don’t throw paper on the ground. —_________, I won’t.