用所给词的适当形式填空。

1. I can't find the museum. What should I ___________ (do)?

2. I need some more money ___________ (pay) for my child's education.

3. Could you ___________ (pass) me those books?

4. My parents want me ___________ (stay) at home every night.

5. Mother's Day is coming, but I'm not sure what ___________(buy) for my mother.