French language Q&A Forum

Hi, I was doing a writing exercise translating "So that all was ready on time." The correct answer was "Pour que tout soit prêt à temps,"' and not "'Pour que tout soit prêt à l'heure." Why is it better to use à temps in this sentence?

Hi, I completed this sentence with 'n'est-ce pas' but it was marked incorrect. I'm confused. The correct answer given was 'n'est pas': I checked the attached lesson (to understand why my answer was incorrect) but I still I don't see why.

Elodie est très bonne actrice, ________ ?

Favori and préféré are adjectives that can mostly be used interchangeably, meaning favorite. 

In what cases are they NOT interchangeable? When do you need to use one over the other?