A landing on Mars is within the _____ of current physical theory.

People who live in a small village are bound to see a good _____ of each other.

Showing ______ to a current or former teacher is a fair reward and an act of gratitude that will also make you feel better.

She never loses _______ with students , which made her the most popular teacher in our school.

Nowadays, more and more people choose to drink alcohol to escape the _____ caused by heavy work.