I'm not the best at Spanish, but for number 15, it is ella tiene hambre.
Simpatica.
This is because Maria is a female and it is only her (singular).
Mi padre es alto y rubio pero mis abuelos son bajos y morenos.
1. ayuda
2. El vestíbulo del hotel
3. una carta
4. veinte dolares
These answers can vary, but these are just some ones I though of. Hope this helps!
