The great chance he has been looking forward to at last.
A. appear
B. appearing
C. has appeared
D. appeared
网友回答
A. appear
B. appearing
(答案→)C. has appeared
D. appeared
解析:考查时态:句意:他一直盼望的机会最后已经出现了。这句话的主语是the great chance,he has been looking forward to是定语从句,修饰chance,所以横线处应该填谓语动词,从前面的has been looking forward to,可知填现在完成时,选C。