What does it mean if you "get off on the wrong foot with someone"?

Your first meeting with that person didn't go very well.

The person didn't understand what you said.

What does it mean if you "go the extra mile". 

You do more than is required to achieve a goal.

You can't meet a deadline and have to extend it.

What does it mean if you "catch someone off guard"?

You ask the person something for which they were unprepared or weren't expecting. 

You discover the person hasn't been doing their job properly.

I'm sorry, I think we _____ off on the wrong foot this morning. I was in a rush and didn't have time to introduce myself properly.

We really can't afford to miss this deadline. I need you all to go the extra ______ and make sure we complete this project on time.

Sometimes interviewers try to catch the candidate _____ guard to see how they perform in unpredictable situations.