Dimanche means Sunday in French. Which is a holiday.

Lundi is the first working day of the week because Lundi means Monday.

This is the season of spring when we see many flowers on trees.

It means twelve in French.

L'automne means automn in French, in autumn leaves fall from trees.

Mince means thin which is the right answer.

Grosse means fat. So it is the correct answer.

Nous is we, elle is she, ils is they (masculine). Correct answer.

Tableau noir means blackboard on which a teacher writes.

Couteau means knife. So this is the correct answer.

Fauteuil means armchair on which we relax.

Dos means back and pointrine means chest.So it is the correct answer.

Je is I, tu is you and il is he, which is the correct answer.

Fer means iron, lock is made of iron. 

Cuir means leather, which is the correct answer.

Navire means ship in which you travel across the sea.

Grande means big and tall, which is the correct answer.

Papier means paper, notebooks are made of paper.

Chapeau means hat, which is worn on the head. It is the correct answer.

Dresses are made of all the three materials.

Bleu is the colour of the sky.

Jaune means yellow. So it is the right answer.

You give a red  rose on Valentine's Day , rouge means red in French.

Bois means wood. So it is the correct answer.

 The colour green is called vert in French .