Помогите пожалуйста. Номер 7 и номер 8.

Упражнение 7.
1 Alex can climb a three.
Mary can't climb a tree.
2 Alex can swim.
Mary can't swim.
3 Alex can't jump like a frog.
Mary can jump like a frog.
4 Alex can't sing.
Mary can sing.
5 Alex can't dance.
Mary can dance.
6 Alex can swing like a chimp.
Mary can't swing like a chimp.
7 Alex can't fly like a bird.
Mary can't fly like a bird.
Упражнение 8
I can swim.
I am five.
Larry isn't at the circus.
Lulu can't sing.
My Daddy can't sing.
Larry is eight.