ПОЖАЛУЙСТА ОЧЕНЬ НУЖНО!!!!!!!! СРОЧНО !!!!!Read the messages posted on the internet

ПОЖАЛУЙСТА ОЧЕНЬ Необходимо!!!!!!!! Безотлагательно !!!!!
Read the messages posted on the internet forum related to smoking. Circle the correct verb forms.
a) I tried /have been trying to quit smoking for a long time now, but have failed / have been failing a number of times. I don't know /didn't know what to do. It's a battle. Can anybody help?
b) I have passed/ passed the two month anniversary without smoking. Just wanted to tell you that I do / am doing GREAT. It makes me feel good to say, I am not smoking/ don't smoke. Thank you very much for all your advice. It has worked / had worked!
c) I am / have been smoke-free for over a month. It can be done! Smoking over a pack a day for 10+ years? just think about the harm you were doing / have been doing to people around you for all this time. Think and do something now! And say hello to the rest of your life. I have / had and it feels great