X to B: I do not understand what should I work out with this question. Please show me the way.
B to X: You should use something like this formula to evaluate the answer.
X to B: Is it something like that?
B to X: You are on the right path, but need to have some twick.
X to B: Where should I twick then?
B to X: Give a guess. Try and error might get u the right answer.
X thought: ...
X to A: I am confused with this fomula to solve this question. Do you mind to help me out?
A to X: What is this? Wait. I get my own notes.
*jjshhhh.... jjshhh... jjshhh...*
A to X: Ok, let me explain the whole topic from scratch k? *yada* *yada* *yada*
X to A: OH! Now I get the whole idea of this topic! I'm now so relieved!
B stayed under radar.
ME: keep quiet and will see how things go in future.