Answer:
you have to answer that yourself, basically the teacher is asking whats the best thing YOU have learned during the first half of school.
Explanation:
A monologue means that there is only one person who's doing the talking, while the remaining characters listen. So, in a dramatic monologue, the character addresses 'a silent auditor'.
How many students are there?
Yes it is a run-on sentence. You are supposed to put a period at the end of world “world”.