Question

I'm very sorry____much of your time. A. to take B to spend C. to have taken up D.to have wasted

答案给的是C，求高手解释，为什么不选A和D

Answer 1

I'm very sorry 后 to do sth. 表将要做某事，
to have done 表已经做某事
已经发生的抱歉用，to have done,排除AB
C. to have taken up： 占去、占用，
如，I won't take up much of your time.
我不会占用你很多时间。
D.to have wasted: 表（粗心、夸张、无目的的）浪费，挥霍 有点夸张，不大礼貌，

选C较合适。
希望满意，祝您进步：）

Answer 2

根据句意可知，说话时候事情已经发生了，所以应该用完成时，所以不能选择A，D项中的waste是物做主语