Ix. change the given groups of words as in the model model: the room of my sister - my sister's room the friends of my sisters - my sisters' friends. 1. the brother of my mother; 2. the friend of my sister; 3. the husband of his daughter; 4. the house of my parents; 5. the table of my father; 6. the work of my mother; 7. the notebook of this student; 8. the books of these students; 9. the sister of my friend; 10. the friend of our cousin; 11. the photo of my grandfather; 12. the room of pete; 13. the son of her brother; 14. the daughter of ann; 15. the sister of my mother.

My mother’s brother
my sister’s friend
his daughter’s husband
my parents’ house
my father’s table
my mother’s work
this student’s notebook
these students’ books
my friend’s sister
our cousin’s friend
my grandfather’s photo
Pete’s room
her brother’s son
Ann’s daughter
my mother’s sister

1. In my opinion, it is REALLY very strange.
2. You can’t be CHEERFUL or ACTIVE in the library. 
3. I prefer to find the INFORMATION I need using my WONDERFUL computer.  
4. LIBRARIANS help READERS with the book they need.  
5. It was a LUCKY trip to Scotland.
6. The birthday cake was UNTASTY. I didn’t like it.
7. Sport helps us to be HEALTHY.
8. This BUILDING has 101 floors.
9. The MANAGER of the shop helped us with the purchase.
10. We were surprised to see that long article written by the BEST JOURNALIST.

Текст:

Why do we sleep? From birth, we (spend) a third of our lives asleep but scientists srill (not/know) exacly why.

Why (humans/have) problems sleeping? In modern society, many people (not/get) the recommended seven or eight hours a night. We (work) long hours and we rarely (go) to bed at sunset.

Why (we/sleep) differently? It (depend) on the time of year and also our age. Teenagers always (need) more sleep than adults. Lots of elderly people (not/sleep) longer than four or five hours, but they often (take) naps during the day.

Перевод:

Почему мы спим? С рождения мы (проводим) треть нашей жизни во сне, но ученые не знают точно, почему.

Почему (у людей / есть) проблемы со сном? В современном обществе многие люди (не/получают) рекомендуемые семь или восемь часов в сутки. Мы (работаем) долгие часы и редко ложимся спать на закате.

Почему (мы/спим) по-разному? Это зависит от времени года, а также нашего возраста. Подростки всегда (нуждаются) в большем количестве сна, чем взрослые. Многие пожилые люди (не/спят) дольше четырех или пяти часов, но они часто (принимают) сон в течение дня.