We should ________ adjust ourselves to the development of our society

The rich only ______themselves in makingmoney and had no eye for the needs of workers.

As a teacher, he has never given his students so difficult a problem ____ they can’t work out

Last year the number of students who graduated with a driving license reached 200,000, a(n) _______ of 40,000 per year.

下列各句没有语病的一项是（ ）