选择题-how long has he been away?-( )

选择题-how long has he been away?-( ) long has he been away? long has he been away?-( ) He has been away ____A.How long B.How often C.How soonD.How i wonder how long has he been away from australia 为什么不是i won 为什么Could you tell us how long he has been away?和Could you te How long has he been skating? 为什么是How long has he been there 而不是How long has he gone there 还有一个噢,How long has he been skating? How long has he been in the hospital?翻译 I want to know how long () A.has he been back B.has he been It_____that Bob has been away for a long time.He hasn't come