HSK 5
Shàngkè líng xiǎnglíng le, tóngxué men gǎnkuài zuò hǎo.
The class bell rang; students quickly took their seats.
HSK 7-9
Huìyì qījiān qǐng bǎ shǒujī tiáo chéng jìngyīn, búyào xiǎnglíng.
Please put your phone on silent during the meeting - no ringing.