not old enough后面要用动词要跟to吗？

Don't make the child who is_______ climb such a tall tree.
A.not old enough
B.too young to
C.not old enough to
D.young enough
书上答案是A 我觉得应该是C吧，是不是书上写错了？

enough old 和 old enough的区别,, Not enough physical memory not enough timer available not pretty enough歌词 有old enough 这种说法 即形容词＋enough ，那有没有enough old old enough 和big enough有什么区别吗？ she isn't____to go to school? A.enough old B.enough yong C.old enough D.large enough 34. The new salary may not be high enough _____. I like my old job. I don’t want to quit. a world is not enough Not enough credit balance 是什么意思？