in / on / at / about / on / for / with / under / of
1. It was really nice you to invite me.
2. The house has been the market for a while.
3. I'm not very good maths.
4. You are no obligation to go.
5. He is in charge the whole department.
6. Robert is an authority English literature.
7. You must be responsible your decisions.
8. I'm very concerned his smoking.
9. Could you deal this problem later, please?
10. I want to protest the state of the building.