1.How old are your parents?
What enough old are your parents ?
2.How many classroom are there in your family?
How many classroom does your family have ?
3.What are these people?
What are they ?
4.Mrs.Xuan has a son, Duc
Mrs Xuan is Duc's mother.
5.His family has four people
There are four peoples in his family .
6.Mr. and Mrs.Minh has a daughter,Lan
Mr. and Mrs.Minh are Lan 's parents
7.My mother goes to work at seven thirty
My mother goes to work at a quarter to eight
8.Mai's books are new
Mai has a new book
9.The lamp is in front of the stereo
The stereo is behind the lamp .