French language Q&A Forum

If you don't know the person, how can you use te; si vous ne connaissez pas cette personne, comment peut-on utiliser te?

In the sentence,"Selon les témoins que j'ai interviewés, et aussi incroyable que cela paraisse, un hélicoptère se serait posé dans la cour de promenade de la prison et La Fuite serait monté à bord avant qu'il ne redécolle, tout ça en quelques minutes à peine !", I don't understand the use of the present tense of redécoller when we are discussing something that happened in the past in particular when it is preceded by two past perfect verbs, se poser and monter.  Also, why is ne inserted before redécoller?

The first sentence,  "il faut vraiment que l'on discute de ta mère"  is the contraction  l'on for "le" or "la" ?  I still don't get why it is even needed.  Would it not work to say, "...qu'on disute de ta mère"  which then maps to English as "that we discuss about your mother". 
I'm guessing that it's a direct object pronoun, but then why isn't "de ta mére"  the object of the sentence?

I used the subjunctive for the following:

La vue .... était la plus belle que j'aie jamais vue...... (subjective attitude?)

In the list of words to be familiar with at the beginning of this exercise, "nutmeg" (the last word given) is included for some reason.

I believe "avant que" takes the subjunctive.  Since this is a memory from the past, shouldn't we use the past subjunctive?

The sentence refers to buying a "region".  To me, that implies a rather large estate with a fancy house and well-kept grounds.  My dictionary gives 'terres' as the preferred choice over 'domaine' when referring to lands.  Should this option not be added?  If not, why is domaine preferred?