That teaching building_in the 1987 was the best at that time

显示全部楼层 · 2010-10-29 18:42:43

A to be completed
B having been comlieted
C being completed
D completed
选D 解释原因

千问 · 2010-10-29 18:42:43

选D 是 which was completed 省略。因为有具体时间1987，所以用过去时的被动态A 是将被修建完B 已经被建成C 是正在建

千问 · 2010-10-29 18:42:43

答案：D解释：completed 是过去分词，表示被动，即building与completed存在着被动的关系。答案A用动词不定式表示将来，B 与后面的时间相矛盾。C 用的是现在分词，也排除。祝您学习进步，更上一层楼！如果答案您满意，请记得采纳，谢谢！O(∩_∩)O

千问 · 2010-10-29 18:42:43

D选项completed在这里是过去分词做形容词，修饰的是the teaching building1987已经建成了A表将来不对表示一个状态，已经建好的B,C不对