1 sentence

1. 我们所有人凑份子给老师买生日礼物。

   wǒ​men suǒ​yǒu​rén còu fèn​zi gěi lǎo​shī mǎi shēng​rì lǐ​wù.

   We all chipped in to buy our teacher a birthday present.

   Source: Tatoeba