1) My name is Kate
2)I am fourteen years old 
3)I am Russian
4) I'm from St. Petersburg 
5)My favourite sport is tennis
6)I'm interested in music
7) My favourite subject is English
8)My father is a programmer. He isn't interested in politics.  His favourite sports are football and swimming
9)My mother is a dentist. She's interested in art.
10)We're always busy, but we're very happy to be together
11)Whose pen is this? — It's my pen
12)Whose book is this? — It's your book
13)Whose table is this? — It's my brother's table
14)Whose bag is this? — It's my mother's bag
15)Whose pencil is this? — It's my sister's pencil
16)Is this your exercise book? — Yes, it is
17)Is this your brother's exercise book? — No, it's my exercise book
18)Where is your table? — It's in the middle of the room
19)Where is your pen? - It's in my pocket
20)Where is your exercise book? — It is on the table
21)Where is your mother? — She is at work