when did you buy this book变为被动语态 Aheavy basket full of apples is being carried by Tom变为主动RT

When did you buy your mobile phone改为被动语态 what did you buy Did you buy anying special when you ___ in Hong Kong,Tina?A.are B.were What did you buy last where did you buy that? did you buy anything?翻译! I ___a new dictionary - when did you ___ it -just now (buy) when did your father buy you the mobile phone 换为被动语态 when（ ）the mobile phone when（ ）you?when （ ）you 是隔开的,要两句 When did you leave? When did you coneback? ___(buy) a beautiful pen.-When did you bu___(buy) a beautiful pen.-When did you buy it?空格中是bought 还是have bought?我觉得都可以, 24.Jack,could you tall me__?Sure.In the post office on Green Road.A.where you bought the stamps B.where did you buy the stamps C.when you bought the stamps D.when did you buy the stamps 求鉴定下列英文句子有没有语法错误when did you buy it?I'll get it a check. --When __ you __ the bike.--Last month.填did;buy,为何have ;bought不行,句中有说到时态吗? Where did you buy it?意思? Where did you buy it?的意思 Did you buy anything special什么意思 Did you buy this book?并回答