The film Roman Holidays is a ______ film. [ ]

A．action

B．romantic

C．cartoon

D．science fiction

留置权因下列哪些原因消灭______

A．债权人死亡

B．债务人死亡

C．债权消灭

D．留置物占有的丧失

E．债务人另行提供担保并被债权人接受