Выберите правильный вариант. ПОМОГИТЕ.
1. ... is a piece of cake on the plate.

a) there b) it

2. ... is winter. ... is a lot of snow.

a) there b) it

3. ... is my birthday today.

a) there b) it

4. We can’t go skiing. ... isn’t any snow.

a) there b) it

5. ... is a long way from here to the nearest shop.

a) there b) it

6. ... is impossible to understand her.

a) there b) it