问题
选择题
______ the fantastic sight, I stayed at the top, _______.
A．This was ; watching
B．Because this was ; watched
C．Not having seen; watching
D．Having not seen; |watched
答案
答案：C
考查非谓语动词。当两个动作有先后关系时，应该用having done，否定是在前面加not，这里相当于一个原因状语从句，I和watch是主谓关系，故用现在分词。故选C。