1 | The police believe that the perpetrator had a motive for the murder. | |
2 | When a car engine overheats, add water promptly to cool it down. | |
3 | The engine failed to start due to a faulty ignition. | |
4 | I need to replace my engine’s oil filter with a new one. | |
5 | His motivation is not for money, but for the pursuit of artistic perfection. |