I.

1.A;2.C;3.C4.A;5.B;6.A;7.B;8.A;9.C;10.A

II.

1.C;2.F;3.E;4.G;5.A;6.H;7.i;8.B;9.D

III.

1.Mai's house has five people.

2.Her father is forty five years old.

3.Her father is a doctor.

4.Her mother is forty years old.

5.Her mother is a doctor.

6.Her brother's name is Tam.

7.Her brother is fifteen years old.

8.Yes,he is

IV.

1.I am Mr.Hung and this is Lan.

2.How are you good evening Miss Giang?

3.What your name and Where do you live?

4.We live on Nguyen Trai Street.