题目

The folks were delighted at the message of their relatives _____ that mine explosion.
A.survived B.to survive C.were surviving D.having survived
为什么选D?
为什么不选B?
The China Pavilion,_____ ,"The Crown of the East," has a unique roof,is one of the most important style features in traditional Chinese architecture.
A.whose structure B.which structure C.structure of which D.of which structure
为什么不选C?

提问时间：2020-12-17

答案

1.不定式to do表示将来,而事情已经发生
2.如果用C,structure之前应该有the 否则structure就零冠词了