用适当的介词填空。

1. It’s my grandmother who cooks ________ us every day.

2. Her parents want her to marry the young man who is _______ a good family.

3. Who helps you _______ your homework in the evening?

4. My grandfather used to go to work ________ his bike.

5. They weren’t very rich, but they were happy _______ those days.

生产经营单位的从业人员享有工伤保险和伤亡赔偿权；危险因素和应急措施的知情权；安全管理的批评检控权；拒绝违章指挥和强令冒险作业权；紧急情况下的停止作业和紧急撤离权。