Complete the advice with in case, if I were you or unless.

1 Take a bottle of water.............. aren't any drinks
2 Don't leave your seat............. you want to lose it.
3 I wouldn't sit in the first row..............because the view isn't very good.
4 ................, I would ask for my money back.
5 Can I have your mobile number............ I need to call you?
6 You should wear a jacket............. colder in the evening.
7 I'd study music......... You could be a professional musician.
8 ............... you say something she 'll never know you like her.