I met Jane while I ______ in the street last Monday. We ______ each other for three years. [ ]

A. worked, didn't see

B. worked, don't see

C. was walking, haven't seen

D. was walking, hadn't seen

感染动物后引起母畜流产的病原菌是（）

A.鼠疫杆菌

B.布氏杆菌

C.炭疽杆菌

D.变形杆菌

E.钩端螺旋体