[attachimg]59472[/attachimg]
[attachimg]59473[/attachimg]
c选项和b选项里的and连接的都是once从句和名词the superiority,为什么B对C错???
为什么B里的HAD BEEN,用过去完成式???
请各位解答,谢谢
http://forum.chasedream.com/dispbbs.asp?BoardID=23&ID=260644&replyID=&skin=1
侬的答案错了
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