How soon will you come back?back怎么用?

（ ）will you leave the town,答案是How soon,那为什么是How soon? How soon will you come back?back怎么用? soon or later you will know how it -----------will you come back中填how soon还是when 1.___ will you he away?A.How soon B.How long1.___ will you he away?A.How soon B.How long Soon,you will be how soon will u leave? ()will you stay in hongkong?为什么是how long而不是how soon要写明原因啊, How soon will you finish your summer homework.与How long will you finish your summer homework.有什么区别? ----- will he be back home ,do you know?A How long B How often C How soon D How far when和how soon的区别when will you come back?还是how soon will you come back?或者二者有何区别 How soon will you return the book to me?(同义句转换)How soon will you ____ the book ______ to me? Could you tell me ------you will be away?About two weeksAhow soon B how llong 关于how soon 和how long.Chould you tell us( ------For about two weeks.A.how soon you will be back B.how long you will be thereC.how soon will you be back D.how long you will be away I'll do it in two hours .特殊疑问句：How soon will you do it ? 为甚麽用how soon而不用how long I will meet you soon how soon will you go there?这句话有语病吗 He will ring you tonight.就tonight 划线提问,用how soon 还是when?为什么?