1) my sister's room
2) her friends' opinion
3) the commander-in-chief's order
4) passer's-by advice
5) Lermontov's poems;
6) the room's walls
7) the boy Peter's bag;
8) my younger sister's daughter
9) the country's flag
10) the sea's waves
11) the girls' pens
12)the women's rights
13) the people's wisher
14) my mother's-in-law birthday
15) the party's members
16) her relatives' sisters
17) this postman's letter
these pupils' pencils
19)those books' pages
20) this house's floor
21) my mother's opinion-in-law;
this old man's advice
my younger sister's daughter
25) the institute's library
26) this writer's story
27) my friends' letters
28) my parents' house
29) these students' meeting