I could have done better ,but i didn't .I felt so sad .I' m

I could have done better ,but i didn't .I felt so sad .I' m I could have such a situation but i didn`t. i could have done better if i was more carefully I' m so sad.. I' m so sad i don't think he could have done better than that,()?A.do i i'm so fucked up.i didn't mean to fuck everything up.but i'm 用所给词的适当形式填空：I felt better,so I didn’t go to the ______(docto Never have I felt so excited可以改成 I DON‘T have felt so excite I'm sorry that I didn't write back to you sooner but I have I’m sorry I didn’t phone you,but I have been very busy _____ I don’t expect no doctor could have done no better.