How to write a letter to the headmaster?

1. Principal, you take care of us like a loving father. Early in the morning, when we rush into the campus by bike, you always say with a smile and distress, "Be careful! Don't ride so fast, did you have breakfast? " I believe everyone has received your concern.

2. Principal, although there is a library in our school, the books in it are scattered, some only have the first episode, and some don't know where it is. Moreover, there are too few books in the school. People who have read many books always don't know what to borrow, but choose some knowledge that we need to know in our daily life, because the library is our rich treasure house of knowledge. Therefore, I implore you to buy more books that are beneficial to us.

Principal, I know you take care of us very hard, but some people are ungrateful and destroy schools everywhere. Like the clean area of our class-the men's toilet, there are always people putting ketchup on the urinal, and even people taking a shit on the wall. What's more, some people go to the toilet to smoke, and then throw them into the toilet after smoking, which leads to the blockage of the toilet and brings us inconvenience. I hope you can send more people to strengthen patrol.

President, I have a lot to say to you. I hope you can take my advice like those wise kings and let us have a better reading environment.

Principal, it is everyone's responsibility to protect the earth. Let's protect the earth together and be a clean person.