trésors (masc.), spelled 'trésor' in the singular.
The plural form of treasure is treasures.
A sister is "une soeur" in French. The plural is "des soeurs".
The plural of "agréable" in French is "agréables."
The plural of "bonjour" in French is "bonjours."
The plural of "objet" in French is "objets."
The plural of "woman" in French is "femmes."
If you mean "miss" as in "madame", the plural is "mesdames".
The plural of "princess" in French is "princesses."
les is the plural for both articles 'la' and 'le' in French
Yes, the phrase les cahiers ("the notebooks") is in the plural in French.
This is shephra it means long as a plural in French
The plural form of "glace" in French is "glaces."