A good film producer must make sure that his films ____ fit into the needs of the changing market.
Scientists believe Native Americans arrived by crossing the land bridge that connected Siberia and _________ more than 10 000 years ago.
—Will you go to the party? —Of course I will if _______.
You may have your own decision on this matter,and I have little doubt _________ you’ll succeed.
“_________ break the law should be punished,” the judge shouted.
—Which side can I sit on the boat? —If you sit still,you can sit on ________.