How long could you waiting for me

How long could you waiting for me could you please tell us tom has gone to america a,how often b,how long.c,if.d,w hen Could you tell us how long we're going to be away?为什么用how long 而不用how soon? Could you tell me （ — ‘In six days.要填’how soon..‘还是’how often..‘或’how long‘? Could you please tell me how long the flight takes?求这句语法的结构 Could you tell me how long the sports meeting will last?这句话有错误吗? how long will thesports meeting last?could you tell me 合为一句话 Could you tell me how long I can keep the book.为什么用I can 把Could you tell me?How long are we going to be away?改为宾语从句 Could you tell me how long it____to fly to WashingtonA.spendsB.costsC.paysD.takes 英语可不可以这么说：could you tell me how long may Ikeep this book? how long is the river could you tell me 改为宾语从句 could you tell me how long he had been away?哪里错了 Could you tell you how long it take to get to school 为什么 在 how long 后面不+ does 为 什么 用将来时 Could you tell me __you will be away?----Only one week.1.how long 2.how soon 理由? could you tell me how long _______ the football club A you have joined B you have been in 急 Could you tell me _____you'll be away?-------About three weeks.A how long B how far C how soon D how often could you tell me how long you 'll( A leave B start off C be away D arrive(解析