Ответ:

1) am/am; I'm not a pupil. I'm not at school.

What are you? Where are you?

2) My brother is a paintist (painter, может?) My brother is not a paintist (painter)

What does your brother do for living?

3) My sister is at work. My sister isn't at work.

Whose sister is at work?

4) He is a student. He isn't a student.

Who is a student?

5) Are you a student? No, I am not. You are not a student. I am a doctor. I am not a doctor. Are you a doctor? - No, I am not

You are not a student, are you?

6) My sister is at home. My sister isn't at home.

Is my sister at home?

7) We are not at school. We are at home. We are not at home

Where are you?

8) My brother is a pupil. My brother isn't a pupil.

He is at school. He isn't at school. Where is he?

9) Are your mother at home? No, she is not. She is at work. -- She isn't at work. ---where is your mother?

10) This is my pen. this isn't my pen. --- Whose is this pen?

I1) Is this your book? --

12) Where are the children?  they are at home. --They aren't at home. Are the children at home?

13) Where is my watch? It's on the table ( в задании ошибка: watch - единственное число, watches - множественное). It's not on the table

14) is this your brother's exercise book? No, it is not, it is my exercise book. It's not my exercise book. whose is this exercise book?

15) Where are my books? They are in your bag. They aren't in your bag.

Are the books in my bag?

Объяснение: