It’s vital that the theory _____ practice, or it could just be something meaningless.

are you from And what are youdoing here” said I , _____ the stranger’s eyes.

下列各项中没有语病的一项是（ ）

We should ________ adjust ourselves to the development of our society

The limits of a person’s intelligence, generally speaking ,are fixed at birth, but he reaches these limits will depend on his environment.