1. this is a book. it is my book. 2. is this your pencil? — no, it isn't my pencil, it is my sister's pencil. 3. i have a sister. my sister is an engineer. my sister's husband is a doctor. 4. i have no handbag. 5. she has got a headache. 6. have they got a car? — yes, they have. their car is not very expensive but reliable. 7. have you got a calculator? — no, i haven't. 8. is this a watch? — no, it isn't a watch, it's a pen. 9. this pen is good, and that pen is bad. 10. i can see a pencil on your table, but i can see no paper. 11. give me a chair, please. 12. they have a dog and two cats. 13. i have a spoon in my plate, but i have no soup in it. 14. my friend says he is going to be a millionaire one day. 15. would you like an orange? 16. mr. smith is an artist, mrs. smith is a poetess. можно с объяснением?