Spanish language Q&A Forum

This grading of this question appears to be an error on the part of Progress. Conditional Perfect is the answer specified, which is "no habríamos muerto" and is the answer that I provided  The answer from Progress is given as "no hubiéramos muerto" and is Preterito Plumamperfecto Subjuntivo, not Condicional Perfecto. 

Lesson Haciendo Snowboard en Formigal:   I couldn't find how to add it to notebook. Can you help me? Randy

The question was to say "You like Marbella". How could the correct answer be "Me gusta Marbella." Your answer is incorrect.

Hello.
I wonder why we used the preterito perfecto de sujuntivo in this sentence, instead of the presente de sujuntivo. Aside from the given hint to use the said verb, can you explain why? Thank you.

i am having a hard time knowing which preposition to use ("of the", "by the", "from the", "to the", et al) 

Not to mention which indirect object pronoun goes before the other (She gives it to him in the morning "Ella se lo da por la mañana")?