Sally: The things i like to do
Correct: The things I like to do
Explanation: If you're going to write the letter [I] in a sentence it should be capitalize. 'I' is an example of a pronoun.

Sally: I like vollyball because of first reason why i enjoy the body.
Correct: I like to play volleyball because I enjoy it and it's good for my body.
Explanation: Study the use of Subject Verb Agreement - The construction of your sentence. You can read English books so that you will be familiar on how to simplify the sentence. Also, check the spelling of the word [VOLLEYBALL] and the pronoun [I]. And, the conjuntion 'BECAUSE' supported the thought of your sentence with that you can now delete the 'FIRST REASON WHY'.

Sally: Also, I'm still enjoying the hobby since elementry shcool.
Correct: Also, I did that hobby when I was in elementary school.
Explanation: The proper usage of some words and the different tenses of the verb since we're talking about your elementary days. It's already in the past tense. Also, kindly check the spelling of the word [ELEMENTARY] and [SCHOOL].

Hello Sally! I really admire the attitude that you have in our class. You're participative and I can see that you're listening. Study the corrections that I've made for you. Good job for your homework. I know that you can do more!

Love,
Teacher Belle.