The Smiths have gone to New York for their holiday, with an old servant ____ their house.

A．looking after

B．look after

C．having looked after

D．looked after

以下关于涉案物品分类正确的是______

A．按是否可移动分动产和不动产

B．按存在的形态分有形资产和无形资产

C．按是否存在充分流通的市场分易耗品、奢侈品