用适当的代词填空 1. This is Tom. _______ is an English boy. 2. That's Tina. _______ eraser is red. 3. This is a cat. _______ name is Mimi. _______ is two years old. 4. That's Miss Yang. ________ is my English teacher. 5. Are these your sisters?  No, _______ aren't. 6. This is my friend, John. _______ is 12 years old. 7. What's _______ favorite color? My favorite color is red． 8. That is Mr. Green. ________ telephone number is 355-2829. 9. Is Jeff your brother? Yes, ______ is.