Someone is ringing the doorbell. Go and see _______.
I don't feel like _____ tonight as I'm so tired.
—Good morning,Bill. —Did you have any trouble _____ through the snow?
We hoped _____ being there would make the work easier.
—What are you going to do this afternoon? —I'm thinking of _____ to visit my aunt.
The boy is only five years old,but he is quite used _____ the telephone.