French language Q&A Forum

Unsure of the correct translation of D Day I turned to wordreference. They start with Le Jour J. Why is that incorrect?

The full text says office DU tourisme, and my de was corrected to du.  I thought it was de and the admittedly unreliably Google translate says de ... but even the vocab list at the beginning of the lesson says de.  Merci.

Hi teachers/fellow learners, for the last sentence "où Le Débarquement a eu lieu en 1944" I was under the impression that for known facts we use present tense in French, but it turns out that passé composé is more suitable. Can you tell me more about this? Thank you so much.

"En 1941, il est parti rejoindre le Général de Gaulle à Londres"

Is this correct? I wrote "En 1941, il est parti joindre le Général de Gaulle à Londres". Did Michel's oncle rejoin de Gaulle?

C'est dommage de ne pas avoir de questions de compréhension pour la lecture et l'écoute... 

Elsewhere, I'm seeing where 'desservir' is conjugated as follows:

je desservis

tu desservis

il/elle/on desservit

nous desservons

vous desservez

ils/elles desservent

Which doesn't match the lesson example. If I were to follow the lesson example 'desservir' would be conjugated as follows:

tu dessers

il/elle/on dessert

nous desservons 

vous desservez

ils/elles desservent  

Which version is correct?

In the question:  "À qui sont ces balles ? ", why is the alternative translation of "These are mine", "Celles-ci sont les miennes" wrong?

On the Lawless French Causative Construction with Objects and Agreement page (https://www.lawlessfrench.com/grammar/faire-causative-2/) there is a cartoon of some kids washing a car with the caption 'Je les fais laver la voiture'. Why is it 'les' and not 'leur'?