选错1.They are in the same classes.
2.Can you look the broom behind the door?
3.We aren't know his name.
4.Who is this blouse?It's mine.
5.What colour is her coats?
6.Class three has a map of China.
7.Can he sing a song?No,he isn't.
8.This is my a classroom.
9.These are your books.Please put they there.
10.He isn't a old policeman.