I often volunteer my time _____ others.A、help B、to help C、helping
---Could we buy a piano, Jack?---I’m afraid there ______ enough room for one in the house.
--Could you please _____ in the room?--Oh, I’m sorry.
The man lives _______ but he never feels_______.
It’s really cold today, ______ ?
You look tired, why not ______ a short rest?