我是个勤学、有礼貌、乐于助人的好学生英语

I am a hard-working , polite , helpful and good student .
hard-working 努力学习，勤学
polite 有礼貌的，
helpful 乐意帮助的，乐于助人的

I'm a hardworking, polite and helpful student.

I'm a hardworking, polite and accommodating student.

I'm a hard-working,polite,helpful and good student.