Hello, Klaus! Thank you for passing your homework. You have an interesting specialty. I bet you really are good at it. I made corrections on your
sentences. Kindly read the explanations and study them. If you have any
questions, feel free to ask me in class. Thank you, Klaus! I'll see you in class!

~ Teacher Mary

Hello, my name is Klaus. I'm in middle school 1. My school's name is Hojong Middle School. My specialty is playing Badok. My hobby is playing soccer.
 Thank you for listening!

1. Hello, my name is Klaus.
Explanation:
a. In starting a sentence, we should always start with a big letter.
b. We put a comma after the word hello to separate it from the clause.
c. We also write the capital letter of the first letters for proper nouns such as your name.

2. I'm in middle school 1.
Explanation.
a. In starting a sentence, we should always start with a big letter.
b. This is the correct spelling of school. To make sure that you have typed
words correctly, always check them after you type them.

3. My school's name is Hojong Middle School.
Explanation:
a. In starting a sentence, we should always start with a big letter.
b. Hojong Middle School is a proper noun. Therefore, we should put the capital letter of the first letters in these words.

4. My specialty is playing Badok. My hobby is playing soccer.

Explanation:
a. In starting a sentence, we should always start with a big letter.

5. Thank you for listening!
Explanation: There should be an ending to your speech. We may say this
expression or other expressions to end the speech.