Not only_______polluted but________crowded.

A．was the city,were the streets

B．the city was,were the streets

C．was the city,the streets were

D．the city was,the streets were

A同学到图书借阅室借书，借书前未检查所借图书是否污损。等A同学来还书时，老师检查到A同学所借图书有污损现象，但A同学认为污损是借书之前就有，那么A同学就不用缴纳图书污损罚款。