Hello,

I understand what you are feeling, and you are in school so marks is what would give you the sense of achievement in what you are doing. 

But, you have to know, life is not meant to be fair, in life you will win some and lose some. And sometimes, when you think something unfair happened to you, even when it is not your fault, think if this is something to worry about or not. 

Because, let me tell you, once you finish school and step out into the real world,  marks would not matter. And remember, school marks is not a guarantee to success in life or in your case, it doesn't matter what marks you get in English, if you are good in English, you are good, that's all. 

I can guarantee that in a few months you will not even remember about these marks :)

Go out there and enjoy your vacations, do what you enjoy doing and learn what you enjoy learning, without worrying about making mistakes or failing.