"completez les phrases" = complete the sentences. ("completez" is a verb. A person or persons are being asked/told to complete the sentences)
the students - les étudiants
"Les villes" in French means "the cities" in English.
Do you mean 'how do you say the lessons in french'? Because that's les leçons
"Les couleurs" is a French term that translates to "the colors" in English.
"Colorie les montres" means "color the watches" in French.
"Les pierres" is a French term that translates to "the stones" in English.
Les toilettes are the loo, the bathroom in French.
Les Autres means The Others in French.
'les gens' means 'the people' in French
the students - les étudiants
Les Guignols is a French term, as well as the title of a popular French satire. Les Guignols, or The Puppets, has become very popular since the Gulf War, and inspired several popular phrases in French culture today.
les amis/les amies
les nombres - les chiffres
'les sciences sociales' are "social studies" in French.
les roseaux means 'reeds' in French.
"les enfants" means 'the children' in French.
les moines