改错。
1.Each computer and each operator have been moved to the air-conditioned house.
_____________________________________________________________
2.A woman with two children have gone to the Great Wall.
_____________________________________________________________
3.This is one of the best novels that has appeared this year.
_____________________________________________________________
4.The police has caught the murderer.
_____________________________________________________________
5.Mathematics are the base of all other sciences.
_____________________________________________________________
6.The United Nations are made up of more than 160 countries.
_____________________________________________________________
7.Ours are a great socialist country.
_____________________________________________________________
8.There stand a lamp, a vase and some books on the desk.
_____________________________________________________________
9.There are two men in the room; the old are the young's father.
_____________________________________________________________
10.The known are less exciting than the unknown.
_____________________________________________________________