| 1 | Volcanoes in this area frequently erupt. | |
| 2 | The volcanoes in this area could erupt at any time. | |
| 3 | With just a slight touch, this bomb will explode. | |
| 4 | The accumulation of long-term pressure finally led to his emotional outburst. | |
| 5 | In such a tense situation, the outbreak of war seems inevitable. |