We have come to realize that creativity is--it takes to keep

A what
我们必须认识到,创造力才能使一个国家保持高度的竞争力.
我们说：it takes creativity to keep a nation …….变成名词性从句,用what代替creativity,就成了what it takes to keep a nation highly competitive .
what引导名词性从句表示“……的东西、事物”