9. Напиши предложения во множественном числе. Образец: It's a book.

They're books. 1. It's a ruler. - They're rulers 2. It's a chimp. - They're chimps 3. It's a school. - They're schools 4. It's a rubber. - They're rubbers 5. It's a pen. - They're pens 6. It's a pencil case. - They're pencil cases 7. It's a school bag. - They're school bags