1. are
=>you aren't a student
=>Are you a student?
2  is
=> she isn't a teacher
=> Is she a teacher?
3. are
=>aren't
=>Are they

4. My mom ( be )………is………. a farmer

=>………My mom isn't a farmer.......

=>………Is my mom a farmer?……………..

5. Mr Hai (be)……is…………….. an engineer

=>………Mr Hai isn't an engineer…………….

=>………Is Mr Ha an engineer?…………….

6. He ( read) ……reads……….books every day

=> ………He doesn't read books every day……

=>………Does he read books every day?…….

7. They ( play)……play……………games

=>……They don't play games……………

=>………Do they play games? …………..

8. He ( watch)……watchs………… TV every day

=>………He doesn't watch TV every day…………

=>………Does he watch TV every day?…………..

9. I and my sister ( walk)……walks…….. to school

=>……I and my sister don't walk to school………………

=>……Do I and my sister walk to school…….…

10. My father ( teach)……teaches…………. me English every Saturday evening.

=>……… My father doesn't teach me English every Saturday evening.…………..

=>………Does My father teach me English every Saturday evening?………

1. You (be) are a student.
(-) You aren't a student.
(?) Are you a student?
2. She (be) is a teacher.
(-) She isn't a teacher.
(?) Is she a teacher?
3. They (be) are doctors.
(-) They aren't doctors.
(?) Are they doctors?
4. My mom (be) is a farmer.
(-) My mom isn't a farmer.
(?) Is your mom a farmer?
5. Mr Hai (be) is an engineer.
(-) Mr Hai isn't an engineer.
(?) Is Mr Hai an engineer?
6. He ( read) reads books every day.
(-) He doesn't read books every day.
(?) Does he read books every day?
7. They ( play) play games.
(-) They don't play games. 
(?) Do they play games?
8. He ( watch) watches TV every day.
(-) He doesn't watch TV every day.
(?) Does he watch TV every day?
9. I and my sister ( walk) walk to school
(-)  I and my sister ( walk) don't walk to school.
(?) Do you and your sister walk to school?
10. My father ( teach) teaches me English every Saturday evening.
(-) My father (teach) doesn't teach me English every Saturday evening.
(?) Does your father teach you English every Saturday evening?

1. are
=>you aren't a student
=>Are you a student?
2 is
=>she isn't a teacher
=>Is she a teacher?
3. are
=>aren't
=>Are they