---I think English is ____unimportant subject.---I don’t think so. It is ____useful tool when we talk with foreigners.
—Everyone knows Russia is the largest country in the world. —That is,it is larger than________ country in Asia.
—How long is the bridge?—It's_______.
The dog ran to a house and_______the newspaper in front of the front door.
Don't_______him________.He stayed up for his homework last night.
It's easy to_______ in a strange city without a map.