2 sentences

1. 学校每年都会举行师生联欢活动。

   xué​xiào měi nián dōu huì jǔ​xíng shī​shēng lián​huān huó​dòng.

   The school holds get-together activities for teachers and students every year.

   Source: Dong Chinese Dictionary

2. 在联欢晚会上，他为同学们献了一首优美的歌曲。

   zài lián​huān wǎn​huì shàng, tā wèi tóng​xué men xiàn le yī shǒu yōu​měi de gē​qǔ.

   At the gala, he performed a beautiful song for his classmates.

   Source: Dong Chinese Dictionary