—Don’t eat too much candy, for it’s_____ your teeth.—Oh,I get it.Thank you.
I knocked on the door but ______ answered.
--- Can you ride a horse? --- No, I ______.
We have a lovely room. It’s one of ______ in the hotel.
--- ______ do you play football? --- Once a week.
Hurry up, ______ you will miss the plane.