单项选择题
A. Before the meal. B. During the meal. C. When the guest arrives. D. When the guest leaves.
A. Two dollars. B. Three dollars. C. Four dollars. D. Five dollars.
A. Mr. Johnson has been the man’s boss. B. The man and Mr. Johnson are colleagues. C. The man is quite familiar with Mr. Johnson. D. Mr. Johnson has just got to know the man.