问题
选择题
(2013·中原名校联考)Not only ________ polluted but also ________ crowded.
A．is the city；are the streets
B．the city is；the streets are
C．is the city；the streets are
D．the city is；are the streets
答案
答案：C
句意：这个城市不仅被污染了，道路也很拥挤。not only...but(also)．..引导分句时，not only后面的分句需要倒装，but also后的分句是不倒装的。故选C。