He may come, but I’m not sure _______ that.
My father is able to _______many different kinds of computers.
Why do you get a snake as your pet? Don’t you think it’s too?
—Tom looks very sad. What’s wrong _______ him? —An accident happened _______ his father this morning.
The boy felt very _______ and fell _______ as soon as he lay on the bed.
The little boy ________ his seat to an old lady on the crowded bus.