英语作文翻译--急急急！！！

You are Li Ming, just out of university, have applied for a Chinese and English translation, but because afraid one's own ability is not enough, and want to participate in the examination of preparing for the postgraduate qualifying examination of next year, so determine to give up this working opportunity, you should express gratitude to the other side at first in the letter, hope to forgive, express the good wish to the company at the same time.