Hey Matteo! Nice work, again. This one is even better than the last! I have copied your email below, where you will find my corrections in uppercase letters (maiuscola). Please let me know if you have any questions, which I would be happy to answer in English or Italian.
Dear professor,
I am writing to you in order to recommenD what our class could do to celebrate the end of the school year. Obviously, I understand that we can not organise a big party, but I was reckoning that IT could be a great idea to organise a sort of “group-event”.
One of my ideas is a clasS lunch. We could book the new sushi restaurant IN the centre of the city. It is said that it is a very cool place, and they make A particular type of sushi.
At the end of the lunch, we could go to the beach. We love the beach but, because of the homework, we could not go there during the year. Hence, a trip to the beach would be appreciated by all of us.
Before we go home, we must take a class picture and, the next year, we will hang it on the wall of the class.
Let me know if you like my ideas and when you are available to celebrate with us.
I look toward to celebrating together,
Matteo