单项选择题

A．Boss and secretary.
B．Customer and salesman.
C．Doctor and patient.
D．Husband and wife.
<上一题 目录 下一题>
热门 试题

填空题
In order to encourage bowel health, older people are advised to choose foods that are naturally rich in______.
填空题
One thing to remember is that a varied diet that includes plenty of______is recommended for everyone, regardless of age.
相关试题