It's hard to keep the house ________ with three kids. [ ]

A. cleaned

B. to clean

C. clean

D. have cleaned

中餐厅应根据档次的高低、（）配备各种餐、用具。

A、餐位的多少和经营菜肴的特点

B、餐位的多少和洗碗间的面积

C、经营菜品的特点和餐厅布局

D、餐具柜的多少和经营菜肴的特点