| 1 | A leader is the head of a school, or enterprise. | |
| 2 | Those who belong to the government, the coal bosses, the heads of big enterprises. | |
| 3 | Some new heads of research teams have come straight from earning a Ph.D. | |
| 4 | "Everything must be turned into numbers, " said the head of the team. | |
| 5 | When Peters learned that he was being fired, he went to see the head of human resources. |