我忘不掉那段旋律；它太朗朗上口了！

I can't get that ___tune out of my head; it's so catchy!

洗碗时，她心不在焉地哼着一首欢快的曲子。

While washing up, she absentmindedly hummed a cheerful ___tune.

这首歌欢快的曲调让每个人都想跳舞。

The song's upbeat ___tune makes everyone want to dance.