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