Not only _____ polluted, but _____ crowded. [ ]

A. was the city; were the streets 　

B. the city was; the streets were 　

C. was the city; the streets were 　

D. the city was; were the streets

人民警察作为国家公务人员，受国家委任执行公务，其在法律上的义务是平等的。这种平等表现在两个方面：第一，相同职务、相同警种的警察履行相同的义务；第二，国家公安机关、监察机关、司法机关及其他机关对人民警察的公务行为实行监督，对任何警务人员的违法行为都要追究法律责任。( )