用括号内形容词或副词的适当形式填空。
1. His mother is as _____ (serious) as his Chinese teacher.
2. Whose hair is _____ (long), yours or mine?
3. Tom talks _____ (much) than any other student in his class.
4. Ann is much _____ (good) than I at English.
5. Li Ping is the _____ (thin) of the two boys.
6. Miss Yang is one of the _____ (popular) teachers in our school.
7. Maggie is the _____ (careful) in her class. She is the top student in her class.
8. Which is the _____ (big), the sun, the moon or the earth?
9. My younger sister does _____ (little) work in my family.
10. The busier he is, the _____ (happy) he feels.