Ответ:

1. 1

2. b

3. 1. They are talking to Jack

3. 2.The friends are dancing at the birthday party

4. b

5. 1. There are no televisions in the shop

5. 2. There is a book in your room

5. 3. There are many people in the office

6. 1. How much ...

6. 2. How many ...

7. 1.- c

7. 2.-b

7. 3.- a