MY TERRIBLE HOLIDAY

We have seven days for National Day.  I thought that we would have seveal days to climb mountains, but I have too mush homework.  Everyday, I am busy with my homework, so I have no time go out. (This is correct, but we would probably say "I don't have time to go out.)  I miss my old life!

You must leave space after punctuation.  Also, important nouns should be capitalized.  If you write or type a number under ten, you must spell it out in letters.  I am not sure what National Day is; that may or may no be correct.