| 1 | Diagram 16 shows a jar containing mosquito larvae. | |
| 2 | He's trying to figure out a way to solve the problem. | |
| 3 | It is spread to humans through the bite of infected tsetse of flies. | |
| 4 | It is spread to humans through the bite of infected tsetse flies. | |
| 5 | Each tea lasts an hour then he wanders home alone. |