Ex1:

1.Miss Nga is twenty four years old.

2.No,she isn't 

3.Her eyes are brown

4.Her teeth are white.

5.No,she isn't

Ex2: 

1.Lan has three meals a day.

2.She always has lunch at one o'clock.

3.She has bread,eggs and milk for breakfast.

4.After dinner,her family eat fruits or cakes.

5.Yes,it is

6.Her family go out for dinner once a month.

I.

1. She is twenty four years old

2.Yes, she is.

3.She has big brown eyes

4.No, she isn't

II.

1.Lan has three meals a day

2.At one o'clock

3.She has bread, milk , eggs for breakfast

4.After dinner, They eat fruits or cakes

5.Yes, it is

6. Her family go out for dinner once a month