我真的累了-I really tried

I really tried,you know ? every day I also have my tutor for 12hours,I really tried,you know ?
tomorrow I have my exam ,but I have not  review it , I have a little bit worry .....
我真的盡力了，你知道嗎？我有補習連續12小時的每一天，我真的累了，你知道嗎？
明天我有考試，但我還沒有温習,我有一點點擔心......