Answer:
2 can fit,
son, which means are
or
eran which means were,
Explanation:
both fit, one is in the present, one in the past
Quinceanera es una chica que cumple 15 anos de edad
I believe it is Puedes but, I am not exactly sure. Sorry!
1) Happily
2) Completely
3) Should be easily
4) Often
5) I'm relatively sure it's never
6) Did you spell this wrong? If it's always it's siempre
7) Quickly
8) Slowly
9) Correctly
10) I think it's poorly