Exercise 7. Поставьте следующие предложения во множественное число

1.What is that child's name? 2. The cat has caught a mouse. 3. There was a lady, a gentleman, a boy and a girl in the room. 4. In the farm-yard we could see an ox, a sheep, a cow and a goose. 5. Is this worker an Englishman or a German? -He is a Frenchman. 6. Why don't you eat this po­tato? 7. This strawberry is still green. 8. The with­ered leaf has fallen to the ground. 9. Can you see a bird in that tree? 10. Does your tooth still ache? 11.1 held up my foot to the fire to warm it. 12. His child studies very well. 13. This man works at our office. 14. There is a new house in our street. 15.  This story is very interesting. 16. I have hurt my foot. 17. The wolf has been shot. 18. He keeps his toy in a box. 19. Put this knife on that table