英语主宾格问题.you can ask------ （她）for the keys.中间因该是什么格,正确答案是什么,

英语主宾格怎么应用 teacher,can,it,the,ask,for,you. Do not ask what the world can do for you,ask what you can do You can ask the nearby policeman for help. You can ask Mike to play the piano for us. 用英语怎么说can I ask you a aquestiong can I ask a question for yo If you still can't find it,you can ask the police for help.H If you l() the wayin the stree,you can ask the police for he you can ask your teacher for help( you can go to the police to ask for help 为什么后ask for前面要加to,并 ask not what your life can do for you ..ask You can ask the policeman over there.He ＿（must）know.空里填什么?为什