Answer:
Teacher , library , friendly environment.
If it had to be the same answer the beginning because you don't introduce characters in the middle or end!!!
If it can be different then conflict would be middle and characters would be begging because a conflict is most likely to be in the middle: the most action packed part of the book.
He becomes interested in ensuring ....
The base of the flag is the standard American flag, but it has a big pig in the middle.
Answer : Distraught
Distraught has a more negative connotation because it implies more feelings of agitation.