I.

1. How old is your father ? 

- He's 40 years old

2. How old is Tuan ?

- He's 14 years old

3. How old are your parents ?

- They're 37 years old

4. How old are your gand father ?

- He's 80 years old

5. How old is your grand mother ?

- She's 75 years old

II.

1. That isn't a pen

2. The book isn't on the table

3. Nam and Ba aren't well

4. He isn't a doctor

5. The children aren't good students

6. Thu isn't pretty

7. She isn't in her classroom

8. They are't tall

9. It isn't hot

10. My name isn't Lan

III.

1, is

2, is

3, aren't 

4, is

5, isn't

6, are/am

7, are

8, are/aren't

9, is

10, are/are

Vì nhiều câu nên nếu có sai sót thì bảo vs mik để mik bổ sung ak

VIII.

9. How old is your father ? 

He's 40 years old

10. How old is Tuan ?

He's 14 years old

11. How old are your parents ?

They're 37 years old

12. How old are your gand father ?

He's 80 years old

13.How old is your grandmother ? 

She's 75 years old

14.How old is your teacher ?

She's 33 years old

IX.

1. That isn't a pen

2. The book isn't on the table

3. Nam and Ba aren't well

4. He isn't a doctor

5. The children aren't good students

6. Thu isn't pretty

7. She isn't in her classroom

8. They are't tall

9. It isn't hot

10.My name isn't Lan

X.

1,2,4.is

3.aren't 

5.isn't

6.are,am

7.are

8.are;aren't

9.is

10.are

Học tốt!!!
#Nocopy