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 8I can swim.I am five.Larry isn't at the circus.Lulu can't sing.My Daddy can't sing.Larry is eight.