单项选择题
A. when B. if C. unless D. for
A. What can be done to create more exciting fragrances. B. Recent innovations in the packaging of body soap. C. Specific reasons why men’s toiletries have not sold well. D. Historical examples of the use of cosmetics by men.
A. An authorized receiver of the mail. B. An express rider messenger. C. A sworn express station clerk. D. A high-ranking official of the town.