（ ）in the mine for 3 days ,the miners were rescued successfully at last
问题描述：
（ ）in the mine for 3 days ,the miners were rescued successfully at last
A,Trapped B,Trapping
C,Having trapped D,Having been trapped .
答
选D.第一,要名词,A排除.
分析句子时态,后半句是过去时,所以前半句不可能是B.
选D是因为这是被动态.被关在矿井里三天.（可参考后半句 were rescued）D是被动态？不是现在完成时时态吗？C为什么不对啊CD都是现在完成时啊（have done），不过D是被动（be done），更符合原意：被关在矿井里三天。所以D现在完成+被动就变成了 have been done