2 sentences

1. 这些理由在前头已经列举过了。

   zhè​xiē lǐ​yóu zài qián​tou yǐ​jīng liè​jǔ guo le.

   These reasons have already been listed above.

   Source: Dong Chinese Dictionary

2. 排在最前头的那个学生是班长。

   pái zài zuì qián​tou de nà gè xué​sheng shì bān​zhǎng.

   The student at the very front of the line is the class monitor.

   Source: Dong Chinese Dictionary