Think and write. （根据主语人称，用be动词的正确形式填空）1.— you a boy?
— No, Inot.
2. The girl _____ Jack's sister.
3. The dog _____ tall and fat.
4. The man with big eyes____ a teacher.
5. ____ your brother in the classroom?
6. — Where _____ your mother?
— Sheat home.
7. How _____your father?
8. Mike and Liu Tao _____at school.
9. Whose dress _____ this?
10. Whose socks _____ they?l. Are, am2. is3. is4. is5. is 6. is, is 7. is 8. are 9. is 10. are