common

屠呦呦前往疟疾更常见的海南研究疟疾病人。

Tu Youyou went to Hainan, where malaria was more ___common, to study malaria patients.

他们共同的经历使彼此建立了牢固的联系。

Their ___common experience created a strong bond between them.

范仲淹希望官员关心普通百姓的需要。

Fan Zhongyan wanted officials to look after the needs of ___common people.