我能听到有什么东西在嗡嗡叫。

I can hear something ___buzzing.

在安静的教室里，你能听到苍蝇嗡嗡叫。

In the quiet classroom, you can hear the flies ___buzz.

故障的霓虹灯牌整夜间歇性地嗡嗡作响。

The faulty neon sign would ___buzz intermittently throughout the night.