French language Q&A Forum

Why "fin janvier" but not "a la fin de janvier"

I do not understand this question and why both are correct:

 «Il y a des visiteurs étrangers à l’hôtel», «Il y a des visiteuses étrangères à l’hôtel»

I understand the one about Germany as it’s taken the gender from the country, but I’m not sure about this one. 

Merci

In this phrase from the solution to "Un voyage de rêve", the word "nous" presumably refers to a father, mother and children. So why the final "e" in "envoûtées"? I'd use "envoûtés" here.

Je ne mange pas de viande ni ne porte de cuir.
do I have to use "pas" in this sentence or not?

Well i bounced the question of prof / professeur off my neighbour's kids who are at secondary / high school, and to a person they replied prof or professeur. They regard "instituteur / institutrice" as a primary school teacher, and " l'enseignant(e)" as a general word for those in the teaching profession, although if it's at university level "professeur" is the norm. They should know and i'm not going to argue with them. And anyway, the prompts were clear and specific just as Cécile said so i can't see what the issue is ??

                           Or 

Le Royaume de Jouets

I saw the first one but why not the second one? Cause I think "de" in here is like "Of" in English, so since "Of" is not related to the number of "Jouets", it should be "de" instead of "des"