подумайте верно ли утверждение ..Если сумма двух чисел равна нулю,то эти числа-противоположные

Theme:Possessive Case 

употребите притяжательный падеж

 1 The room of  my friend.

2 The wife of her brother

3 The book of his sister

4 The name of this boy

5 The table of our teacher

6 The dress of my sister

7 The room of her parents

8 The books of these students 

9 The toys of the children

10 The dressen of women

11 The room of these men

12 The map of England

13 The name of your girl- friend 

14 The poems of Pushkin 

15 The letter of my aunt

16 The car of my parents 

17 Show me the letter of Pete

18 The flat of my sister is large

19 The children of my brother are at home

20 The room of the teachers is on the first floor

21 The name of this girl is Jane

22 The work of these students is interesting 

23 This is family  of my uncle

24 The father of my friend is a doctor

25 Those  notebook is it?- It is a notebook of Tom

26 Do you have books of Diskens?

27 What colour is the bag of Maxim?

28 What part of the city do you live in?

29 What is the surname of that first-year student?

30 The questions of our  students were interesting