3 sentences

1. 他们唱圣诞颂歌和跳舞。

   tā​men chàng shèng​dàn sòng​gē hé tiào​wǔ.

   They sing Christmas carols and dance.

   Source: CCMatrix

2. 他们唱颂歌，交换礼物，还踢起了足球。

   tā​men chàng sòng​gē, jiāo​huàn lǐ​wù, hái tī qǐ le zú​qiú.

   They then sang carols, exchanged gifts and even played soccer.

   Source: CCMatrix

3. 此外，唱圣诞颂歌也是圣诞夜的重要内容。

   cǐ​wài, chàng shèng​dàn sòng​gē yě shì shèng​dàn​yè de zhòng​yào nèi​róng.

   In addition, singing Christmas carols is also an important part of Christmas Eve.

   Source: CCMatrix