求助一道比较题

Freedman`s survey showed that people living in small towns and rural areas consider themselves no happier than do people living in big cities.

正确答案就是原句中的,而我选了no happier than are people who are living,因为我认为比的是happy(形容词)就要用be动词are来当谓语补出,如果用do不就是在比consider而不是happy了吗?

还请各位前辈能帮晚辈我指点迷津,谢谢.

do 应该是consider的省略。

那么，are后面的表语是什么？happy?此处是consider是否happy,而不是是不是happy.

got it?