Please take a look at my sentences!

Hi,

Please, take a look at my sentences and check if they are right:

I've made some corrections.

1) When I'm at home I usually sit around.

2) In the business world, some actions are taken based on 'on the spot' decisions. 

3) As he didn't have money to buy a new suit, he wound up going to the wedding in the old one.

In the following sentence what's the grammar explanation for the absence of preposition:

                 " I thought you were( - no preposition here) downtown".

'Downtown' is a special term that is used idiomatically in this way with no preposition. 

Best wishes, Clive

Hi,

in the sentence nº 3 : "As he didn't have money to buy a new suit, he wound up going to the wedding in the old one", why can't I use the word marriage, but wedding? Don't they mean the same? For the actual ceremony/event, we usually use the term 'wedding'. On the other hand, we say things like Tom and Mary are having problesms with their marriage. They are constantly arguing, and Tom  is seeing another woman.

   Another doubt: what's the difference between anniversary and birthday? ' eg My wedding anniversary is the day on which I got married. I celebrate that day each year. eg My birthday is the day, each year, on which I was born.

And the way we refer to someone in his/her birthday is: birthday boy/birthday girl ? Yes, but we usually just say it about children, or about friends as a minor little friendly joke.

Clive