This question came up in an English second language test paper.
A:Why didn't you tell me Brian broke the window? B:_____________________________________
The intended answer was - B: He begged me not to tell you about it.
Answers in dispute- 1B: He begged me not to tell it to you. 2B: He begged me not to tell that to you.
For me 1B and 2B sound incorrect, but I cannot justify why. Any help?
Background - I am an English conversation teacher at a Korean middle school. I don't teach grammar, but because I am the only native English speaker I am often asked to clarify specific grammar issues.