Выбери правильное предложение.

1.a)What Year you in ?
b)What Year are you in ?

2.a)I'm in Year 3.
b)I'm Year 3.

3.a)How old he is ?
b)How old is he ?

4.a)He has got five years old.
b)He's five years old.

5.a)What's is this ?
b)What's this ?

6.a)It's my rubber.
b)It's is my rubber.

Помогите пожайлуста !!!