＿＿＿several times about it,but he could not give the correct

＿＿＿several times about it,but he could not give the correct answer.
A.Being asked B.Having been asked
C.He would ask D.He had been asked
应该选什么,为什么?
＿＿＿several times about it,but he could not give the correct answer.A.Being asked B.Having be 浏览次数：342次悬赏分：0 | 解决时间：2010-10-30 19:55 | 提问者：liuliangwode
＿＿＿several times about it,but he could not give the correct answer.
A.Being asked B.Having been asked
C.He would ask D.He had been asked
应该选什么，为什么？
have been asked,
1.整体分析，为被动，可以删除C选项，
2.进一步分析，___several times about it 和but he could not give the correct answer的主语都是he,又该句子是独立主格结构，前面的主语He可以省略，所以D选项可以删除.
3.整个句子翻译出来是“虽然他被问过很多遍了，但是他还是不能给出正确的答案”，前半句影响到后半句，所以必须使用现在完成时。
4.所以最终答案选B.have been asked.