4 sentences

1. 汽车喇叭嘟地响了一声。

   qì​chē lǎ​ba dū de xiǎng le yī shēng.

   The car horn honked once.

   Source: Dong Chinese Dictionary

2. 前面的司机一直在按喇叭。

   qián​miàn de sī​jī yī​zhí zài àn lǎ​ba.

   The driver in front keeps honking the horn.

   Source: Dong Chinese Dictionary

3. 他正在练习吹喇叭。

   tā zhèng​zài liàn​xí chuī lǎ​ba.

   He is practicing the trumpet.

   Source: Dong Chinese Dictionary

4. 操场上的大喇叭正在播报新闻。

   cāo​chǎng shàng de dà lǎ​ba zhèng​zài bō​bào xīn​wén.

   The loudspeakers on the playground are broadcasting the news.

   Source: Dong Chinese Dictionary