( ) 1. Who is Sam?
( ) 2. What does Anna like doing?
( ) 3. How does Lily come to school every day?
( ) 4. What time can they finish (完成) cleaning the house?
( ) 5. What is Bill like?
( ) 6. How often does Amy do morning exercises?
( ) 7. Whose books are these?
( ) 8. When do they have a Computer lesson?
( ) 9. How old is Mary's mother?
( )10. What's the relationship (关系) between the two speakers?