I had been waiting outside for about an hour ___ I heard my name called.A before B when C as D after为什么不选A呢?(答案是B)

The magazine that I had been waiting for a----- just now.初中单词拼写 I've been waiting for I've Been Waiting 歌词 You smiled and talked to me of nothing and I felt that for this I had been waiting long 过去式几种表达的区别I waited for an hour.I had waited for an hour.I had been waiting for an hour.它们有什么不同? The bus came after I for about half an hour为什么I后面要填had been waiting?为什么不是had waited?wait不是持续动词吗? I have been waiting for you I've Been Waiting For You 歌词 I've been always waiting for Is this all I've been waiting I have been waiting all my live... I have been waiting regardless of how long do I have been waiting long是什么 英语翻译U've been waiting so long,I'm here to answer your calls I know that I shouldn't have had you waiting at all I've been so busy,but I've been thinking 'bout- what I wanna do wit you I know them other guys,they've been talking 'bout the way 英语翻译U've been waiting so long,I'm here to answer your calls I know that I shouldn't have had you waiting at all I've been so busy,but I've been thinking 'bout- what I wanna do wit you I know them other guys,they've been talking 'bout the way You Smiled And Talked To Me Of Nothing And I Felt That For This I Had Been Waiting Long嘛意思?如上、、、 这是谁说的话　You smiled and talked to me of nothing and I felt that for this I had been waiting long. 英语高手进啊280Did you know (whom i was waiting for)?为什么这句句子是对的?前面不是用did提问的么?我觉得应该是Did you know (whom i had been waiting for)? I remember,I have been waiting for you.