10 questions are driving me nuts if you could help

how would you say this?

1 I put in alcohol what you put in juice in your vodka orange.
2 How long were you alone with him (for)?
3 Fate wanted it otherwise. I never attended New York University.
4 What would his motive be for murdering her. / What would his motive for murdering her be.
5 I'd be scared that I wouldn't survive if I left.
6 Because of gravity, when brushing your teeth, unless your sleeves are above your albow, they'll get wet.
7 What do you want to eat? I'll have whatever I can have more of. (can you say the bold)
8 The only reason people wear gold watches is to show off, so if its white gold, you can't really.
9 A week before I was due to get out of jail, I got a cellmate who had killed his wife.
10 fill out pants
11 The hot plate have a security where if you forget to turn it off, at one point it doesn't get any hotter, it stays at the same temperature.

Thanks