I need to give Dad a c—— （补全单词）to tell him the good news

I need to give Dad a c—— （补全单词）to tell him the good news —Do remember to tell Tom the good news.—OK.I will tell him( I have （ ）good news to tell you A a B the C/ 选什么 I am a to tell him the bad news I think important to tell him the news.A,that B,this C,it D, ( )he has already known the news,I don't need to tell him on 介词 副词 填空I could hardly wait to tell him the good news,but I —When will you tell him the good news?—I will tell him about When are you going to tell him the good news?[ ] （I have a good news to tell you） Don't forget to tell him the good news.Of course I______. A. you didn't need to tell him the news中的to tell可否改成telling?