单项选择题
A. as B. while C. when D. for
A. 从古代起旅店就为旅行者服务。 B. 古代后旅店就为旅行者服务。 C. 古代时,旅店是为旅行者服务的。 D. 古代的旅店是为旅行者服务的。
A. usually makes one feel uneasy B. is a good way to make friends C. is proper to ask a man in action D. shows one’s consideration for other people