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.

下颌第二、三磨牙的牙体长轴舌向倾斜为 （）.

A.与牙合平面在颏侧所构成的角小于90°

B.与牙合平面在舌侧所构成的角大于90°

C.与胎平面在舌侧所构成的角等于90°

D.以上都不对