Помогите решить тест. Вместо вариантов ответа стоят кубики, поэтому ответ обозначать так: 1-2, 3-4 и т.д. Заранее спасибо.
1. You can buy it at the …
 chemist
 chemists
 chemist’s
 chemists’

2. This is my … room.
 children
 childrens
 children’s
 childrens’
3. My … friend is in Kiev now.
 fathers’
 father
 father’s
 fathers’s
4. My … library is very rich.
 brother-in-law
 brother’s-in-law
 brother's-in-law’s
 brother-in-law’s

5. I have a … brother.
 twelve-year-old’s
 twelve-year’s-old
 twelve-year-old
 twelve-year-olds’

6. … flat is large.
 Peter and Meg’s
 Peter’s and Meg’s
 Peter’s and Meg
 Peter and Meg

7. My … car is new.
 sister’s-in law
 sisters’s-in law
 sister-in law’s
 sister-in-law

8. Mr. Watson was satisfied with the results of speaking to …fathers.
 Bob’s and Mike’s
 Bob and Mike’s
 Bob’s and Mike
 Bob and Mike

9. Mr. Watson was satisfied with the results of speaking to …father.
 Bob’s and Mike’s
 Bob and Mike’s
 Bob’s and Mike
 Bob and Mike
10. … meeting has been cancelled.
 Tomorrow’

 Tomorrows’
 Tomorrows’s
 Tomorrow’s
11. The recipe you want was in … .
 last Sundays’ paper
 last Sunday paper’s
 last Sunday’s paper
 last Sunday paper
12. The … qualifications have been questioned recently.
 commander-in-chief
 commander-in-chief’s
 commanders'-in-chief’s
 commander’s-in-chiefs
13. Jenny had read all … plays when she studied at school.
 Shakespear and Shaw plays
 Shakespear’s and Shaw plays
 Shakespear and Shaw’s plays
 Shakespear’s and Shaw’s plays