French language Q&A Forum

Quel est le meilleur aspirateur? is a usage  ( non action )

where as Laquelle de ces bouilloires marche le mieux?  uses a verb action ?  i.e the kettle works  ?   

Tu es récompensé pour l'avoir aidée.
You are being rewarded for helping her.

The correct answer is "Tu n'habites pas ici depuis longtemps" yet the lesson shows using the passé composé in negative sentences with "depuis" Why is the correct response in the present tense?

" You won't use this in Indirect Speech where whether = if. " Doesn't it always? I need a lot more examples.