阅读理解：
Jane is an American girl. She is a student. She is fifteen. Her father is Mr White. He is tall and strong. Her mother is Mrs White. She is small and slim. Bob is her brother. He is a doctor. He is polite and helpful. Jane is a happy girl. She loves her family.
1. Jane is English. ( )
2. Bob is Jane’s brother. ( )
3. Bob is helpful and polite. ( )
4. Jane is 14. ( )
5. Jane has a happy family. ( )