How long＿＿＿＿ you＿＿＿＿ pen pals?Since we were ten years old 为什

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How long＿＿＿＿ you＿＿＿＿ pen pals?Since we were ten years old 为什么填have been 是词组吗还是特殊用法?急……

看到since,知道是现在完成时.
“”你们做笔友“”：you are pen pals
变为完成时：you have been pen pals?
变特殊疑问句：How long have you been pen pals?
如果有疑问,欢迎追问
请记得及时采纳哦,亲…….
再问：额……必须用been吗？用made可不可以？
再问：额……必须用been吗？用made可不可以？
再答：不可以，make friends是瞬间动词，不能与一段时间连用(how long) 只有改成延续性动词be friends才可以。

How long＿＿＿＿ you＿＿＿＿ pen pals?Since we were ten years old 为什 how long have you( it"s about ten years since we( ) a marrie How long have you ＿ from university? 1.-How long＿you＿(be)in this school -For more than 5years.I＿( A hundred years ＿quite a long time.A.are B.is C.were 英语＿＿＿my daughter is only ten years old.she knows a lot.a.bec I saw lucy yesterday We＿(not see)each other for ten years请问用 Mary is ten years old. 同义句 Mary is ＿＿ girl.急呀求助高悬赏 We ____________(learn)English since we were 10 years old. Therr will be ＿＿ ten years later.十年 How long have you lived here?Five years ____(pass) since we The baby is only＿＿＿ .A.ten mouths old B.ten mou