1) a. Someone has put chocolate on the sofa!
b. And Dennis has broken my Dad's favorite CD!
c. People has left their dirty plates and glasses everywhere in the living room. My parents will kill me!

2) a. Stop always bullying people smaller than you!
b. Why don't you fight someone your own size?
c. You always steal stuff from smaller kids. You are a loser!

3) a. First, you forgot the CDs in your father's car!
b. Then you laughed at my best friend.
c. On top of that, you didn't talked to me at all!

4)  a. I know Helen has been telling lies about me. She's so pathetic!
b. And Mike and Lia, have been spreading rumours about me! They're such losers!

5) a. You have been ignoring me for weeks. And yesterday you avoided me in the school yard! I don't get it!

b. Can we still be best friends?
c. I can't stand this situation anymore!