Not only ____ polluted but ______ crowded.

Not only ____ polluted but ______ crowded.
A、was the city; were the streets
B、the city was ; were the streets
C、the city was; the streets were
D、was the city; the streets were
【正确答案】：D
【题目解析】：Not only ……but also…… 表示不仅而且，当not only 放句首时要引起部分倒装，be 动词was 要提到 the city 主语之前，因此排除B C, but 后面的句子不需要倒装，因此选D