Нужна помощь !!! Все задания кроме 1-го , заранее спасибо )))

21 These are spiders.2 These are stars.3 These are boys. 4 Those are babies.5 Those are flowers.6 Those are bookshelves. 7 Are those balls?8 Those aren't buses.9 Those aren't mice.10 These are sheep.31 The dog's ball2 The man' s skateboard 3 The children 's songs.4 My friend 's room5 My brother's wife6 The teacher's table 7 Pushkin 's poems8 Peter's letter9 My parents ' car41 My brother is a worker. He is at work. 2 Are you an engineer? Yes, I am3 Is your sister a typist? No, she isn't a typist, she is a student. 4 My sister is at home. 5 This is a my bag. 6 My uncle is an office worker.7 Helen is a painter. They are on the walls.She is much paper. It is on the wall. Helen is a brother. He is a student. He is a family. His family isn't in Moscow.