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
-Would you mind my opening the window?
-__________.
A．No, not at all B．Sorry, I’ll do it right away
C．Yes, please D．I’ll be glad to
Every day I spend two hours ______ my homework.
A．finishingtodo B．finishingdoing
C．tofinishtodo D．tofinishdoing
He’s got a birthday cake____ his ____ birthday.
A．on ，thirteen B．for ,thirteen
C．on ,thirteenth D．in ,thirteen
