Answer:
wind blew the rocks over the edge of the hillside
Firstly kids where not supposed to do those things in school however it happens so if something like this has to happen make sure u keep it to yourself of it gets out and you been discriminated speak to a teacher someone u can trust
The correct answer is was working.
You need to use past continuous tense (was working) to denote that an action which was being processed for a period of time has now been interrupted. So, Penelope was working on her homework for a prolonged period of time, and then the doorbell rang and interrupted her.
