用适当的介词填空。
1. His great grandmother became ill _____ a kind of disease.
2. What do you think _____ Jane's attitude toward life?
3. She can answer just _____saying "Hello".
4. _____ a disabled person, she is strong enough.
5. —Could you open the door _____ me, please?
    —Sure!
6. Let's think about the good things _____ our life, and we'll feel better.