Here is a conversation
1: hey I need your help with what just happened. Will u help me out with it?
2: of course I will. I got to know about the matter from the monitor
1: what do u thinks we should do
2: firstly monitor and u should tell all the truth to your teacher and apologize for the mistake
1: we can find out where the monitor kept the book. If we can't find we will seek our friends to help. If we find out the book we will submit the book to the teacher with an excuse. We can all search in the school premises. It can however be in the school premises.
2: If it’s unsuccessful, we could write up a notice and pin it on the students' notice board for LOST BOOK. we can assign badge holders to go all over the school and search for the book and also pass the message to peons and teachers.
1:what if that’s unsuccessful?
2: if that's unsuccessful, we could ask the librarian for a solution or otherwise we have no option other than to buy a new one.
hope it helped i hav ansered this bfr