问题
选择题
The great chance he has been looking forward to _______ at last.
A．appear
B．appearing
C．has appeared
D．appeared
答案
答案：C
题目分析：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。