yǒu rén zuò tú biǎo, yǒu rén gǎi biāo tí, yǒu rén jì shí, yǒu rén fù zé huí dá wèn tí

有人做图表，有人改标题，有人计时，有人负责回答问题。

Some make charts, some edit titles, some keep time, some are responsible for answering questions.