This is the key _____ the door of our classroom. It’s my turn ______ the door.
| A．of ; locking | B．of ; to lock | C．to ; locking | D．to ; to lock |
I had trouble finding out the answer _____ the question.
| A．of | B．to | C．off | D．about |
Have you ever been _______ in making a movie or a play?
| A．involved | B．take | C．photo | D．act |
This is the best hotel in the city______ I know.
| A．where | B．which | C．that | D．it |
He suggested _______ by plane, but I thought it would cost too much.
| A．go | B．to go | C．going | D．gone |
Father won’t allow me to play outside ________ I wash up the dishes.
| A．if | B．unless | C．because | D．why |