structure : if + past perfect( if-caluse), …would + have + past participle ( main-clause)             paragraph :'' If I had known you were coming, I would have baked a cake''-that's my last thought of me about sarah before she went. She my best friend but she went without saying ''goodbye''  . She went to a strage city with her family to looking for a great job. I wish i could talk to her the last goodbye, because she is my best friend , we have met each other since 5 years Ago... i love her so much ,,,                  '

If I have known your kindness  ,I wouldn't have beaten you. I am very sorry now because you will left tomorrow.I am very regretful.Our memories will be disappeared if you are far from me.If I have thought at that moment,I wouldn't acted like that.Now,I want to say "sorry my friend"