This is a boy.This is a baby.That is a book.Is that a ball?This isnt a mouse.That isnt a cat.My tooth is white.This is a man.This is a khife.That is his pen. Поставить во множественное число умоляююю напишите

These are boys. These are babies. Those are books.Are those balls?These aren't mice.Those aren't cats.My teeth are white. These are men.These are knives. Those are their pens.