he is preparing for his chinese exam 对his chinese exam提问给的空是__ he __ __

He is busy preparing for the speech,so he can't help _____the experiment whih us. Mr Smith will be the c____ of the meeting . He is busy preparing for it now he is preparing for his chinese exam 对his chinese exam提问 John is busy now ,for he is _____ for the final examination.A.preparing B.to prepare C.prepares he is preparing for his chinese exam 对his chinese exam提问给的空是__ he __ __ I’m sure Andrew will win the first prize in the final.-- I think so.He ____ for it for months.A.is preparing B.was preparingC.had been preparing D.has been preparing Mr .Li has been asked to _____a speech onMonday morning,and he is preparing for it now.A speakB deliver Shall we ask David to join the group travel now?You'd better not.He is said 空格 the final exam.A,prepared for B,preparing for C,to be preparing for D,to be prepared for Mother is ____supper and the rest of the rest of the family are sitting at the tale___ it.A.preparing,prepared B.preparing,prepared forC.preparing for,preparing D.prepared for,preparing forprepared 和preparing for有什么区别? He has been preparing for his wedding是什么时态?现在完成时? The whole class is working hard preparing for the exams.为什么用preparing? my mother is busy preparing for supper.改错.my mother is busy preparing for supper.改错.去掉“for” 为什么? the teacher is preparing information for the parents' meeting. Mary is preparing for the comingcompetition.请问这两句中的preparing for 意思都一样吗? Who is preparing for the birthday party?的意思 Mother is ____supper and the rest of the rest of the family are sitting at the tale___ it.A.preparing,prepared B.preparing,prepared forC.preparing for,preparing D.prepared for,preparing for He is _______(准备晚会）,while she is watching TV可以用preparing for the dinner吗打错了是晚饭 prepare forknowing how well he ____his future career,i feel confident that he will make a success.A.is preparing for B.is prepared for C.prepares D. prepares for请问答案是什么?为什么这么选呢?非常感谢! preparing for=?