Текст исправил:
It's usual morning routine. Susan woke up, put his clothes on, brushed his teeth. He has also figured out that this routine is getting on his nerves because it's so boring to do it every day. Then he saw a note on the fridge from his mum of the things he must do that day. First of all, mum wrote that Susan must walk the dog. Then, bake either muffins or biscuits. The last but not the least is take out the trash. Firstly, he concentrated on muffins. Secondly, he took out the trash. And finally, he walked the dog. He wasn't bored stiff because the dog had really driven him up the wall and run away. The boy tried to catch up with the dog, however, he ended up in a car accident. Fortunately, Susan had minor injures, and I suppose he will have to be more careful next time, too.