单项选择题

A．Passenger and bus conductor.
B．Doctor and patient.
C．Shopkeeper and customer.
D．Daughter and father.
<上一题 目录 下一题>
热门 试题

填空题
We should ______ (关心年轻一代的教育问题).
填空题
Only after the local residents become sick, ______ (化学品公司才开始清理污染场所).
相关试题