下列句子没有使动用法的一项是（ ）

___ we know some basic knowledge concerning AIDS, we can protect ourselves from being infected

－______do yougo to the city park －Usually bybike.

The businessman offered a(n) __________ price for one of her collections, giving her a pleasant surprise.

They are teachers and don’t realize the basic/primary rules and principles _____ to start and run a company