1. Her name is Linh
-> Her name isn't Linh
-> Is her name Linh?
2. They are nurses
-> They aren't nurses
-> Are they nurses?
3. I am a doctor
-> I am not a doctor
-> Are you a doctor?
4. Those are his pens
-> Those aren't his pens
-> Are thoes his pens?
5. My father is an engineer
-> My father isn't an engineer 
-> Is your father an engineer?
7. They are in the class
->They aren't in the class
-> Are they in the class?
8. Phong's school is in the country
-> Phong's school isn't in the country
-> Is Phong's school in the country?
9. I am in class 6A
-> I am not in class 6a
-> Are you in class 6A
10. The books are in Minh's desk
-> The books aren't in Minh's desk
-> Are the books in Minh's desk