Which sentence is correct? Why?

[ProstoAz]

1. Sarah's new boyfriend is absolutely nice. She's very lucky.
2. Last night I dramt I was being chaised by this huge black dog.
3. He apologised for being late.
4. We're having the front of the house painted next week.
5. They've been living here since at last 30 years. - без "since"
6. I can't get used to start work so early.
7. We don't go out to restaurants any more.
8. Where are the car keys? I had them a minute ago.
9. They were really helpful and gave us lots of information.
10. I really wish I had more time.
11. He went rock-climbing despite of his fear of heights.
12. They might decided to go to the circus after all.
IF YOU MAKE DO THIS FOR ME,I WILL BE REALLY THANKFUL...!!! PLEASE CORRECT THE MISTAKES ! BYE !

1, 6, 11 и 12 незнам... Възможно ли е да са правилни?