at / by / about / with / from / to
| 1. bad (doing) sth | |
| 2. bored sth/sb | |
| 3. busy sth | |
| 4. capable (doing) sth | |
| 5. careful sth/sb | |
| 6. careless danger | |
| 7. certain facts | |
| 8. clever (doing) sth | |
| 9. content sth | |
| 10. contrary advice | |
| 11. curious sth/sb | |
| 12. different sth/sb |