Mr.  Brown _____ as much time as he can _____ the flowers in his garden.            

A. takes; look after

B. costs; to look after

C. spends; looking after

D. uses; look after

根据《建设工程质量管理条例》的规定，隐蔽工程在隐蔽前，施工单位应当通知建设单位和( )。

A．建设工程质量监督机构

B．勘察单位

C．建设行政主管部门

D．设计单位