French language Q&A Forum

What does mettrai mean

I was wondering why with the sentence "une salle de bains avec une baignoire", that "bains" is plural. Is it always plural even if there is just the one bathroom ?

Merci

The lesson says to use "il a les yeux bleus" but  the test says "Il avait les yeux noisettes", as wrong. I am not sure what is the exception even though I am learning a language of exceptions

I use Word Reference as my bilingual dictionary.  Here's their note on the two spellings.  Note: "ass(e)oir" and "rass(e)oir" have two conjugations. The conjugated forms with an "e" are more common than those with an "o". 

(Alice répondit, plutôt timidement, “Je-Je ne sais pas vraiment, Monsieur, en ce moment précis - tout du moins je sais qui j'ÉTAIS quand je me suis levée ce matin, mais j'ai bien dû changer plusieurs fois depuis.”)

This was the question: 

From a drop-down multiple choice, I answered that it meant "I have everything" but I wasn't sure that was correct because of the "les"

The correct answer was, "I have all of them," but couldn't that be written as, "J'en ai tous?" That's where I got confused.