It is better to ____ the lights before you leave here.
A．put out B．put off C．put on D．put up
I will do it .
A．after a minute B．in a minute C．right way D．before a minute
Why not _____ help when you were in trouble?
A．you ask for B．ask for
C．asking for D．asked for
Could you please ________?
A．do the dishes B．doing the dishes
C．to do the dishes D．did the dishes
Dropping litter ______ never allowed in our city.
A．don’t B．are C．will D．is
It’s better ____ your voice down in public places.
A．keeping B．to keep C．keeps D．keep
