| 1 | The efforts within the past two years were in vain. | |
| 2 | Saying just one wrong thing can negate an entire day of good statements and actions. | |
| 3 | Adding or moving bolts may alter the nature of the climb and devalue the efforts of the first ascent. | |
| 4 | I expected the children to burst into tears, devastated by what had happened to all their hard work. | |
| 5 | He pointed out that this approach will lead to the international community over the years to the Korean Peninsula nuclear-free outcome in vain. |
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