6 Find and correct 12 mistakes in the diary entry.

I had a serious talk with my parents last night. My exam results were worse than last time. They're probably the worst ever! Dad was angrier than he usually is and Mum was the same. Dad said having the teenager in the house is the most stressful thing he knows. I said, 'Don't worry, Dad, I can work harder. Next year will be the most important year of my life and I'm going to get the best marks in my class'. I couldn't think of anything more intelligent than that to say. I suppose it was better good than saying nothing.