I REGRET_______YOU THAT YOUR APPLICATION FORM HAS BEEN DENIED. A....

29. - 25 DE THI HOC KI 1 MON TIENG ANH LOP 12 CO DAP AN
25 DE THI HOC KI 1 MON TIENG ANH LOP 12 CO DAP AN

29. I regret_______you that your application form has been denied.

A. informing

B. to inform

C. inform

D. to have informed