Hi, I've re-read this thread again and now I have a simple question. First of all, thanks a lot for everyone's help here.
I guess in almost every circumstance, I can say something like "I'm not sure; let me think about it", right? (By the way, is the punctuation fine in that bold expression?)
Thanks a lot
I mean these two expressions could work as one, could be put together to mean "I'm not yet sure but the answer might come later".