Don't sit ______ the middle ______ the classroom. You are too tall.
A:in; of
B:in; for
C:at; of
D:at; for
一 Her job is to look after the baby.
一 You mean she's a baby-sitter?
下列哪种植物种类最多,分布最广( )
社会生活的方方面面都不能缺少人与人的沟通、互助、合作,和谐的人际关系是人人渴望的,建立和谐的人际关系必须由_____ 开始 ( )