Seeing that the little boy was so interested in learning,the rich man ________ A allowed B agreed填哪个,为什么啊

问题描述:

Seeing that the little boy was so interested in learning,the rich man ________ A allowed B agreed
填哪个,为什么啊

选A
两个词都可以做及物和不及物动词,当agree做及物动词时须与to搭配
而allow不用