单项选择题

A．Because it serves only a few specialties.
B．Because it’s too crowded.
C．Because it’s too costly.
D．Because the service is too slow.
<上一题 目录 下一题>
热门 试题

填空题
To treat everyone with courtesy, it is essential for one to have ______.
填空题
What is the main idea of this article
相关试题