The letters for the boss___________ on his desk but he didn't read them until three later.[ ]

A. were put

B. was put

C. put

D. has put

下列不属于银行应重点监控的管理状况风险的是( )。

A．借款人的关联企业倒闭

B．借款人在银行存款大幅下降

C．中层管理层薄弱

D．最主要领导者陷入诉讼纠纷，无法正常履行职责