1. i am a pupil. i study at school. 2. my brother is a painter. he is not an engineer. 3. my sister is at work. she is a doctor. 4. he is a student. 5. are you a student? no, i am a doctor. 6. my sister is at home. 7. we are not at the school. we are at home. 8. my brother is a pupil. he is at school. 9. is your mother at home? - no, she is at work. 10. is your cousin at home? - no, he is at school. he is a pupil. 11. is your sister a teacher? - no, she is a student. 12. is your father at work? - no, he is at home. 13. is your sister a typewriter? - yes, she is. - is she at home? - no, she is at work. 14. my grandfather is a scientist. 15. my mother is not a teacher. she is a doctor.