Homework

 I don\'t really want to rewind my time to the past.

>> Correct

or

>> I really don\'t want to go back to the past.

Currently i do not regret anything of my life.

>> Correct - Just remember, the pronoun \'I\' will always be in a capital letter.

There would some silly or foolish moment when i was growing up.

>> There were some silly or foolish moments when I was growing up.

or

>>> I might have done silly and foolish things when I was young.

However, every hard experiences cultivated(mold) myself well.

>> However, every hard experiences cultivated/ molded me well.

or

>> These experiences refined me well.

The problems surrounding my life had solved and i successfully overcame it.
>>  The problems that surrounded my life had been solved and I successfully overcame it.  

or

>> The problems I\'ve gone through had been solved and I successfully came out of it.   
And i am not willing to have same things. i undergo the some tough experiences if i return to the particular moment when i was under the huge problem on me.

>> So, I\'m not willing to go have the same things again. I have gone through tough experiences and I don\'t want to return to the same situation facing the same problems again.

Especially, i do not want to go back in the moment when i was in the military, it was too hard to bear it for me.
>> Especially, when I was in the military, it was too hard for me to bear.
Anyway, i am sorry because i was sick last Friday and i cannot go my class on. See ya today! there is a lecture above and i will make a fine discuss with it.

>> By the way, I\'m sorry I wasn\'t able to take the class last Friday because I was sick. See you today! There is a lecture above and I will make sure to have a fine discussion about it.