Choose the right variant of the verb 'to be':
1. Mr Brown and Mrs Smith in the shop.

2. Kate not in Prague last year.

3. My mum in the kitchen 3 seconds ago.

1. Mr Brown and Mrs Smith are in the shop

2. Kate wasn't in Prague last year

3. My mum was in the kitchen 3 seconds ago

1. did you

no, i didn't.

2. didn't you

yes, i did.

3. wasn't it

yes, it was.

4. didn't they

no, they didn't.

7. did you

no, i didn't.

8. hadn't you

yes, i had.

9. could you

no, i couldn't.

10. weren't they

yes, they were.

11. were you

no, i wasn't.

12. did you

no, i didn't. 

13. did you

yes, i did.

14. did you  

no, i didn't.

15. did you

yes, i did.