6. D. Change simpatico to simpáticas.
Because this needs talk about more than one person and they are female so you need to only talk about girls.
7. El buen amigo femenino.
8. Una amiga sociable.
You need to change the un because it is basically saying a male-female and I am sure you are only talking about the female therefore it is the una.
The correct word in this case is APOYARIAMOS because the conditional form is apoyar-ía, -ías, -ía, -íamos, - íais, -ían
79. aquellos
80. Esto
81. Aquella
82. Estos
