French language Q&A Forum

Pourquoi "le raisin mûr" au lieu de "des (ou les) raisins mûrs" dans la phrase :

Les vendangeurs cueillent le raisin mûr.

         par rapport à 

Mon fils cueille des pâquerettes pour la Fête des Mères.

I thought 'tous' was pronounced 'too' unless it was used as a pronoun meaning 'all (of us/them)'.

But in the example:

Je veux que vous ayez tous votre exam.

'tous' is pronounced 'Toos'.

Is this correct? If so, why?

I'm really confused. I was marked wrong on a test when I put 'le jour de la Paques' for 'Easter Day'. The correct answer is supposedly 'le jour de Paques'. 

Which is it?