I that the job has been filled.A. regret to sayB. regret sayingC. regret to have saidD.

问题补充：

I that the job has been filled.

A. regret to say

B. regret saying

C. regret to have said

D. regret said

答案：

(答案→)A. regret to say

B. regret saying

C. regret to have said

D. regret said

解析：考查动词用法。regret to do后悔要做……，regret doing对做过的事情感到遗憾。句意：我遗憾的要告诉你工作已经满了。