Please, correct my home work.

My teacher gave me a task to write a letter to my imaginary penfriend and answer <strike>on</strike> his questions about my opinion on <strike>about</strike> friendship, being a teenager and marriage.
Dear Tom,
Hi! How are you? How did you spend your holiday? Tell me all.
<strike>Thanks</strike>Thank you (more formal but looks better) for your letter. You <strike>got</strike> have given me some very interesting questions about being a teenager, friendships and marriage.
First of all, I will write <strike>you</strike> about friendships because I think that friends are the most important part of our life, of course, after family. Friends are people who can understand you, can help you and they will be with you at difficult times. Finding a really good friend is difficult <strike>and</strike> but it’s cool if you have <strike>the </strike>a best friend. <strike>That’s About me I can’t say that</strike> I can't say that i have a best friend <strike>I now have the best friend,</strike> but I do have <strike>just</strike> good friends who are all wonderful people and I spent with them the most splendid time of my life.
Now is about teenagers. Being a teenager is an interesting and exciting time of your life because we (I’m also teenager) do a lot of things <strike>at</strike> for the first time, life opens its doors <strike>for</strike> to us and <strike>we get</strike> more opportunities become available to us <strike>in this time</strike>. Of course, teenagers can have some problems too. We think that no one <strike>doesn’t</strike> understands us, we don’t know what wait and what we need from life. (Wasn't sure what you were trying to say SORRY.) But I think that all problems have a solution.
And the last thing is about marriage. Geting <strike>a</strike> <strike>marriage</strike> married is a responsible action. In my opinion people can get <strike>marriage</strike> married if they have an <strike>got</strike> education, they have a job and they can <strike>be responsible for their</strike> support themselves. <strike>It means</strike> This would mean that they can be responsible for other people, <strike>for example, for</strike> such as their children. And, of course, you must really love your <strike>the </strike>chosen <strike>one</strike> partner.
I <strike>think I gave answers on</strike> hope that i have answered your questions.
Write soon,
Love,
Sasha.