zhè cì bānwěi gǎixuǎn quánbān tóngxué dōu yào tóupiào, yīge dōu bùnéng shǎo

这次班委改选全班同学都要投票，一个都不能少。

In this class committee re-election, the whole class has to vote; not a single person can be left out.