Possible Clues:

• Well, in Paris or Panama
• Word with "muy" or "tres"
• Well, on either side of the Pyrenees
• "Tres ___" ("very well," in French)
• French well
• First Indochina War's Battle of Dien ___ Phu
• 'Tres —!'
• ''Muy __, gracias''
• Well: Sp
• Well, in Montreal