| a. trying to find out the facts about something to learn the truth about it (story 1) | | |
| b. to find something you didn`t know before (story 1) | | |
| c. useful information that may help solve a crime (story 1) | | |
| d. (the police) took someone to a police station because it is believed that he/she committed a crime (story 2) | | |
| e. people who see a crime, accident, or other event happen (story 2) | | |
| f. giving work to someone (story 3) | | |
| g. possible or likely in the future (story 3) | | |
| h. with a value (usually in money) (story 4) | | |
| i. working secretly in order to catch criminals or get information (story 5) | | |