Rephrased sentences

[Oprica Laura]

I rephrased these sentences but I really want to know if they are ok
1)Why did you fly to Australia so suddenly?If only you havent flied to Australia so suddenly.
2)I shouldnt have gone to the party uninvited.I'd rather havent gone to the party uninvited.
3)Perhaps he hasnt received his invitation yet.He may hasnt received the invitation yet.
4)You probably left your coat at the theatre.You mght have left your coat at the theatre.
5)She finally managed to phone Bill in the evening.She phoned Bill in the evening.
6)What is it that is thinking of I wonder.What is she thinking about I wonder.
7)Everybody assumed that it was Susan who told on Bill.Susan must have been who told on Bill
8)If there had been more flowers in the shop I could have chosen something else for your birthday.Had there been more flowers in the shop I could have chosen something else for your birthday.

[RonBee]

1. If only you hadn't flown to Australia so suddenly.
2. I'd rather I hadn't gone to the party uninvited. (Or: I wish I hadn't gone to the party uninvited.)
3. He might not have received the invitation yet.
6. I wonder what she is thinking about.
7. It must have been Susan who told on Bill.

~R

[Oprica Laura]

Thank you very much