| 1 | They decided to unite and fight against the enemy. | |
| 2 | We must learn to protect ourselves to combat the epidemic. | |
| 3 | The economic stimulus plan aims to combat unemployment and economic recession. | |
| 4 | The warriors are trained to fight the enemy's attacks effectively. | |
| 5 | Many new technologies are being developed to combat the adverse effects of climate change. |
