Yes, they should be given because they  will continue doing bad things unless they would learn from them. I think they should be punished.

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1.
David: Yes I should. because will be carrying om not speak unless he wouldn't make them.
Correct: Yes, they should be given because they  will continue doing bad things unless they would learn from them.
Explanation:
*Use they as the subject because the question is about students.
*I have changed some words in your sentence based on what I understood. Some words you used were not appropriate, so I changed it.

2.
David: so they are I think you shoul be punihed.
Correct: I think they should be punished.
Explanation:
*Use they as the subject because the question is about students.
*Be careful with the spelling punished.

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Hello, David! Thank you for submitting your homework. Please read the following corrections and explanations carefully. If you have questions and clarifications, you can ask me in our class. Thank you!