the look on her face was___of someone not knowing what to do

句子分析：Not knowing what to do,he decided to ask the teacher fo “the foolish man stood there not knowing what to do”为什么用“kno ____ by the look on her face,she didn’t catch what I meant. judging by the look on her face,she didn't catch what I mean the surprised look on her face suggested that she what had h 麻烦翻译一下!谢~Knowing what to do can keep you or someone close to Not knowing what appropriate measures to deal with the situa the ( )look on her face suggested that she ( )angry the look on that girl's face when she was able to do it hers I do not want to face the the feeling of knowing what you want to do.中的knowing look,someone __________ on the ground.what is t