I waited, cold and tired, out of the building for ______ seemed to be a very long time.
A. which B. that C. what D. it
答案是C。请问怎么理解?谢谢!
《高考英语备考1号·速效编》
《高考英语备考1号·写作编》
《高中英语晨读晚记》
《高中英语错题笔记》
《零起点考大学英语》