以下标有题号的每一行均有一个错误，请找出，并按下列情况改正：
此行多一个词：把多余的词用斜线（\）划掉，在该行右边横线上写出该词，并也用斜线划掉。
此行缺一个词：在缺词处加一个漏字符号（＾），在该行右边横线上写出该加的词。
此行错一个词：在错的词下划一横线，在该行右边横线上写出改正后的词。
注意：请在答题卡上作答。
Dear Peter,
Thanks very much for invite me to your birthday                 76.       
party on Sunday. I’d like very much come but                       77.       
I had an examination on Monday morning. It is                       78.       
a very important exam but I can’t afford to                            79.       
fail it. I’ll spend all the whole weekend reading                      80.       
and prepare for it. So I’m really sorry that                           81.       
I won’t be able to come in this time. I hope you                       82.       
can understand. I’ll take this chance to wishing                       83.       
you a wonderful time in your birthday. Happy                        84.       
birthday, Peter, and many happy return of the day!                  85.       
Yours,
Li Ming