The children must( ) (stay) away from the building

问题描述:

The children must( ) (stay) away from the building
同上

The children must(stay)away from the building
must后面跟动词原形还有别的证据吗?没有,就是看mustmust是什么意思?是不是只是一个情态动词?是,必须哦,这个答案是根据什么形式?如主语+be+doing,就是这样,喵~~~~~望回答主语+情态动词+do