English Conversation Practice - Erased File

Sam: The whole file has been erased.
Aaron: How did that happen?
Sam: I don't know. Who was the last person working on it?
Aaron: I was the last one to work on it.
Sam: What did you do to it?
Aaron: Nothing. I saved the file and went home.
Sam: I knew this would happen.
Aaron: Are you blaming me for this problem?
Sam: Yes. You always screw up the projects.
Aaron: You are so rude. That's why no one wants to work with you.

1. What happened to the file?
It was copied
It was stolen
It was erased
It emailed

2. Who was the last person to work on it?
Aaron
Sam
Aaron and Sam's boss
Aaron and Sam's co-worker

3. Who is Sam blaming for the problem?
His boss
Aaron
His co-workers
The receptionist

4. What did Aaron call Sam?
Great
Nice
Awesome
Rude