I feel sure that ______ qualification, ability and experience, our headmaster is abundantly equal to the position we have in mind.
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 ________.