sing sb a song:Sorry, I’m afraid not 是什么意思?

Sorry, I’m afraid not 是什么意思? 选择题 I'm afraid that no one knows ___. I'm afraid no one here is able to get the machine ___. i'm afraid there is ____for all of us.A.no big enough room B. no room big enough i'm afraid there is ____for all of us.A.no big enough room B. no room big enough I'm afraid no one can predict_____?A, where our teacher had gone B,how long the meeting lasted i'm afraid so.怎么解释? Can you see a kite on the well? A.Yes,Ican .B.No,I'm not C.Sorry,Ican'tD.Sorry,Ican i'm afraid to和i'm afraid of doing 之间的区别是什么？ I'm afraid of doing 和I'm afraid to do 有什么区别