我后悔没有早点告诉你真相怎么用英语表达

Question

如题

Answer 1

regret to do 对要做的事遗憾。 (未做)
regret doing 对做过的事遗憾、后悔。 (已做)
I regret to have to do this, but I have no choice.
我很遗憾必须这样去做，我实在没有办法。
I don't regret telling her what I thought.
我不为告诉她我的想法而后悔。
regret having done sth. 对已发生的事感到遗憾

据此 正解应为I regret not telling you the truth early或者I regret having not telling you the truth early

Answer 2

I regret not telling you the truth in time.
也就是说，我觉得不应该加for

Answer 3

I regret not telling you the truth early.

it's my opinion。

Answer 4

I regret for not telling you the truth in time