1 sentence

1. 全班同学乃至老师都参加了这次志愿者活动。

   quán bān tóng​xué nǎi​zhì lǎo​shī dōu cān​jiā le zhè cì zhì​yuàn zhě huó​dòng.

   The whole class, and even the teacher, participated in this volunteer activity.

   Source: Dong Chinese Dictionary