—We’d better go downstairs right now for lunch. —____ They serve food 24 hours a day.
If the wound _______ become swollen, do not hesitate to call me.
He ______ to get out of trouble, but no one would help him.
Our class _______ more than 70 students.
No bird and no beast _________ in the lonely island.
_______ I always felt I would pass the exam, I never thought I would get an A. A. While B. Once C. If D. Until