The boy is very young.He can't go to school.(合并一句) The boy isn't _______ ________ ______

问题描述:

The boy is very young.He can't go to school.(合并一句) The boy isn't _______ ________ ______

很高兴能够在这里回答你的问题,这道题的正确答案应该为:
old enough to