A teacher gave his students a test. Most of the students finished all the questions without much effort until they all read the last one. It was "What is the (one) name of the woman who cleans the school?"
All of the students (think) that was some kind of joke. They had all seen the cleaning woman many (time) during each day at school. It was clear that she was tall and old, how would they know her name?
So all the test papers (hand) in, leaving the last question unanswered. Just before the class ended, one of the students asked (quiet) if the last question would count toward the results of the test.
"Of course", said the teacher.
Just few seconds later, the teacher went on to say. "In your lives and careers, you (meet) many people and they are important, so they each are worth your attention and care, even if all you do is smile and say "Hello".
All the students realized its importance. Over the following days, each of the students tried (find) out the name of the cleaner. They all learned that cleaner's name was Dorothy. Everyone introduced the cleaner carefully (them). And they never forgot the lesson that their teacher gave them.