I believe the answer is sibilance correct me if i'm wrong.
B the dog that ate my homework is called henry
in one of my health classes, the teacher was the most helpful i’ve ever had, yes, teachers are supposed to be helpful but he was the best at it. He always pushed us to be better people and to better understand the world. This teacher was bright and creative, and he always came up with new things to support us to keep going. I’ve had good teachers before but he topped all of them, and i appreciate how hard he tried to keep us focused.
not sure if that answered your question but if you want to write it differently i think you should keep the topic the same throughout and convince people reading why you believe your teacher was good/bad :)
