Remind you they’re still awaiting admission (4,1,4)
I believe the answer is:
ring a bell
I'm afraid I can't explain this answer.
Can you help me to learn more?
(Other definitions for ring a bell that I've seen before include "Signal to start class" , "Beginning to arouse a memory" , "sound vaguely familiar" , "Begin to rouse memory" , "to remind one of something" .)