Haha, I totally accept all the mistakes I made, without them I could not go further

Being a teacher doesn't mean I know everything, it only means I need to know more.

Being a teacher doesn't mean I know everything, it only means I need to know more.

Dazzler, what's the difference between answering me and my student? What's wrong with keep on learning?

Why seat is a passive phrase ?the lady was not in a theater she didn't need someone to show her a seat to sit on. So if we need to use past tense answer B is also right, if we want to express sth which is happening, Answer D is ok. I just feel confused.