The police found that the house ____ and a lot of things ____.[ ]

A.has broken into ; has been stolen  

B.had broken into ; had been stolen

C.had broken into ; stolen  

D.had been broken into; stolen

（）的电气连接箱随机械钩头的连挂和解钩自动进行。

A.全自动车钩

B.半自动车钩

C.半永久车钩

D.所有车钩