Could you write down a best answer for common Interview questions about MS Excel?

Abdullah_Al_Saud 

I feel constrained to make my first answer less ambiguous. You seem to have missed the gist of what I was saying. I suspect strongly that the 130 people who have viewed your request since you first posted may share this point of view, which can explain why you've gotten no more recommended Q&A's regarding Excel. Mine wasn't, if you read it carefully, a recommended response to a possible question; on the contrary, it was to question your underlying premise.

So here's the main point: you will be better served in a job interview by being honest than by trying to fake knowledge you don't have.

Any fakery--responding to a question with a memorized answer that you don't really understand--would be easily exposed by a follow-up question. Any competent interviewer would know how to do that, so you run a big risk of being exposed as a fraud.

Until you do in fact, truly understand how to use Excel, you will be far better served by (1) admitting you haven't used it, while (2) demonstrating in some other way that you are a good learner, that you pick up new skills quickly.