---who_____ --one of my friend did A did give it to you B gave it to you

答案是第一个，我认为第二个，因为这里who 做的是主语，谢谢各位了，告诉我到底哪个对，有时候答案总是和想法不同，所以很迷惑

呵呵~同学。
因为这里是一般疑问句，所以选A，A才能构成疑问句，而B不行。

根据答案，最后的did知选A。 did 在问题里是表强调，原形为do。强调who这个主语 参考 在不同的语境下，do强调句表达出来的各种语用意义如下： 1. 通过强调来消除对方的怀疑（真的……）： （1）A: Do you love me? B: I swear it. I do love you. 2. 通过强调以增强反差（相反，……才……呢！）： （2）You always say it doesn’t matter, but it does matter. （3）He told me he saw a ghost, but I wonder whether he really did believe it himself. 3. 通过强调对某事物作部分认同（倒是真……，说不定真……）： （4）He claimed to be rich and did occasionally have a ten-pound note in his wallet. （5）Occasionally he did write a letter to his parents, but he was not the good-son type of boy at all. （6）A: If he had believed you, he would have done something. B: Well, perhaps he did do something about it. 4. 通过强调，对事物真正（或佯装）表现出惊讶（果然……！）： （7）Oh, Mary, you did find a beautiful present for me. （8）What, you did win all this money in the lottery? 5. 强调谓语，流露对所表达事物的感情（实在……）： （9）Oh, Jane, you are so sweet. I do love you. （10）After a long walk with her friend she said: “Oh John, let’s stop here. I do get so breathless.” （11）I’m sorry, but the way you said that did sound funny. 6. 通过强调并重复来肯定该事物（的确……）： （12）My sister married a crook, but it was a good thing she did marry him, or she would never have found a husband in all her life. （13）Jack said he would come and he did come. 7. 通过强调表达一种对比： （14）I want to weep. In fact, I do weep a little. （15）I don’t have much contact with my family. I do see my mother sometimes, though. 8．在祈使句中，do表强意的请求，而不是命令，有时它可以使邀请对方的心意更加客气、热情、友好，而且亲切，此时的do可译为“务”、“务必”等。例如： （16）Please do sit down. （17）Do be careful! （18）Do tell me all about it. I’ll keep it a dead secret. （19）Do write to me when you get there. 通过强调手段表达的语用意义当然远不止这些，而且在这些意义之间也不能划一条十分明显的界限，一切还是取决于语境。

A

我觉得是第二个，怎么可能用第一个呢？是不是答案错了，我赞同你的观点，这里who 就是主语，也是疑问词，第一个完全说不通

事实上,现在的美国人说话比较口语化.我敢肯定很多美国人是不会用A那种说法的,虽然从语法上来说这种说法才是对的.如果看美国片多了,会发现他们在说这种问句时很多时候都用陈述句的方式,只是像中国人一样加上问话的语气而已.