求一篇高中英语作文

I used to be a good student when i was in junior high school.But after granduation from middle school and going to high school,i realise that it so hard to step into the tenth in my class.To this situation,my parents and teacher all think it is hard for me to be at a famous university.For me,i am so worried about myself.The talent students in my class enjoy a happy and relaxed study everyday,while i usually study three to four hours per night in order to take the entrance examination successfully.But i still feel that i have not enough time to take a good achievement.I worry about my study very much.I hope i can achieve a good result through my hard woking one day .

i’m a student ，i thank our earth has been poluted ，but what can we do for our earth ？ fiystly， the most important thing is to protect our water ，we can use the water for more than three times and we can。。。。。