@dg
1. We have to be greatful to the teachers because teachers gave us knowleges, they taught us how to write, how to read,and how to do something that we have't known yet.
2. We should be polite, study well, do the right thing, usually visit them.
3. When I got bad marks, they said: " Don't sad, you will do better in the next test, I promise". When I answered wrong, they always give me a smile and thank me for answering that question, then they said the correct answer. They never say any bad words to me, but they told me that never give up, life has more changes for you.