Fix grammatical errors in this sentence: That reminds me, I need to call my father.
That's not the case.

I don't know if this is a good way to say "I'm sorry, I don't know what to say."

• I think this is a good idea. – Mike, 113165532217861 Jul 27 '17 at 16:44
• @Mike, I'm not sure what you mean by "I don't know what
That's not what I want to say.
- I'm not sure if I want to say that, but I need to say that.
- I don't know if I want to say that, but I'm not sure if I want to say that.
- I don't know if I want to say that, but I'm not sure if I want to say that.
- I don't know if I want to say that, but I'm not sure if I want