Rettelse af oversættelse

Hej, er der nogen her inde, der gider at kigge min oversættelse igennem for fejl?

Kære elever!
I løbet af dette år har jeg prøvet alt! Jeg har talt pænt til jer, og jeg har truet jer. Jeg har appelleret til jer og skældt jer ud. Jeg har også bedt en kollega om hjælp. Han har gjort sit bedste. Han har beskrevet problemet, undersøgt sagen og endda forslået løsninger. Og vi har diskuteret problemerne i jeres klasse. Jeg havde forestillet mig, at det ville gå let, og havde troet, I ville samarbejde. Jeg havde håbet, problemerne ville være forsvundet efter nogen tid. Nu, da vi er kommet til årets afslutning, kunne jeg tænke mig at spørge jer, hvad I mener, der er sket.


Dear students.

I have tried everything this year. I have been talking nice to you, and a have been threaten you.
I have appeal to you, and scold out on you. I have also asked a colleague about help. He did his best. He had described the problem, investigated the case and even suggests some solutions. And we have discussed the problems in your class. I had imagined, that it would go easy, and I had thought that, you would co-operate. I had hoped the problems would be gone after some time. Now, when we are arrived till the end of the year, I would like to ask you, what you mean, is happened.