quán / bān / tóng / xué / dōu / cān / jiā / le / huó / dòng / dú / dú / tā / yīn / wèi / shēng / bìng / liú / zài / jiā / lǐ

全班同学都参加了活动，独独他因为生病留在家里。

Everyone in the class took part in the activity; he alone stayed home because he was ill.