Some retired people have nothing to do. They often get together and ___for hours talking about their past experiences.

A．look around

B．get around

C．turn around

D．sit around

广西壮族自治区村民在新建住房时，应当配套建设（）。

A.无害化卫生厕所

B.机械化小型仓库

C.现代化无油烟厨房

D.自动化环保浴室