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。
Dear Peter,
Thanks very much on inviting me to your birthday    __________
party on Sunday. I'd like very much go but    __________
I had an examination on Monday morning. It is    __________
a very important exam but I can't afford to    __________
fail it. I'll spend all the whole weekend reading    __________
and prepare for it. So I'm really sorry that    __________
you won't be able to go this time. Hope you    __________
can understand. I Ml take this chance to wish   __________
you wonderful time on your birthday. Happy    __________
birthday, Peter, and many happy return of the day!   __________