I only have a little left to do
Me falta poco
Sugar is missing
Falta azúcar
(Le falta azúcar = the coffee needs sugar)
Of course (asked for favor)
No faltaba más
I’m missing the other one (socks)
Me falta la otra
This is the last thing that was missing
(That’s the last thing I need)
Lo que (me) faltaba
We have to go soon, hurry up
Falta poco para salir, apúrate
Hang on, it won’t be long
Aguanta que falta poco
(to a group) Aguanten que falta poco
Who did I miss?
Quien falta?
This soup needs salt
A esta sopa le hace falta sal
So much more is needed
Hace falta mucho más para (infinitive)