French language Q&A Forum

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?

Hi I don't understand why "Tous les enfants partent mais aucun ne prend le train"  is correct but 

:Tous les enfants partent mais aucun d’entre eux ne prend le train" is not.   

THE LESSON SAYS: We can also express none of them using aucun d'entre eux ne ... / aucune d'entre elles ne ..., I understand "aucun d’entre eux/elles" is used with people and les enfants are people. Thanks.

Speaking to friends, would it not be correct to say: 'Dépêche-toi', rather than 'Dépêchez-vous'?

Here it is 

‚c‘est M.Dupont qui était responsable…‘

Is this an expression that always uses the present tense followed by the imperfect? Could you use imperfect and imperfect in this example ……c‘était M. Dupont qui était…..

Thank you 

It’d be nice to have an example of what to do with the past participle of être verbs when using "on" when it means "we".  I can’t find this covered in either of the modules On : we.

Please provide further explanation about the phrase "Peut-être qu'elle est allée dire bonjour..."  I believe that in English, we would write it, "Perhaps she went to say 'Hello' ..."  Why does French not have quote marks around something that is said?  For example, how would you write the following in French:  The farmer said, "I'm going into town to buy a cat."?

I saw "Il a fait les mêmes choix." in the exercise.

Here mêmes is before the noun and choix is plural. Why we don’t use de in this situation? Thank you.

How would you write "Question of the Day"? For example, each day my french class starts with a "question of the day". I've been using jour but now I'm worried I've been incorrect.

I have let my writing and dictation practice slip because I’m speaking French on a daily basis, but a lesson like this one brings home the need to keep at these weekend challenges, keep practicing, keep adding to the vocabulary bank, keep addressing the grammar.