单项选择题
W: Anything else, sir M: That’s all for now. How much do I owe you
A. Teacher and student. B. Saleswoman and customer. C. Husband and wife. D. Policeman and criminal.
A. Would we make B. Had we made C. If we are to make D. If we were making
A. only if B. if only C. even if D. if not