They are shocked to find that in this town the traffic rules are not strictly.
问题描述：
They are shocked to find that in this town the traffic rules are not strictly.
A NOTICED B recommended C observed D concerned.
为什么选C
顺便分析一下句子成分
They are shocked to find that in this town the traffic rules are not strictly______.
答
observe the traffic rules 遵守交规,使用了被动语态,be observed作宾语从句的谓语.that 是在这干嘛的