1. She was nervous as she felt she was vbeing looked at by someone.
When she felt being stared at by someone, she became nervous.
2. It’s a shame, but he is so stupid that he is always laughed at by us.
He is always laughed at because he is shamefully stupid.
3. A lot of money is spend on food.
4. Is the car being washed?
5. His discoveries are often refered to.
6. He was given a watch when he retired.
7. Help was offered to him.
8. The rule was explained to me.
9. He has been offered a job.