Parents have to be able to to be to go with their kids and also give them the room to g

问题补充：

Parents have to be able to to be , to go with their kids, and also give them the room to grow.

A. flexible

B. strict

C. responsible

D. careful

答案：

(答案→)A. flexible

B. strict

C. responsible

D. careful

解析：句意：父母们能够灵活些，既要和他们的孩子在一起，也要给他们空间成长。Flexible灵活的；strict严格的；responsible尽责的；careful小心的，选A。