C, z, s and x in Spanish: seseo and distinción

Au programme

• How is the c in casa (house) pronounced?
• In central and northern Spain, how is the z in zapato pronounced?
• How is the x in México pronounced?
• Which is the correct spelling of "zero" in Spanish?
• Saying gracias "GRAH-thyahs" (Spain) or "GRAH-syahs" (Latin America): both are correct.
• The s in casa sounds like a z, as in English "rose".
• Complete with the plural of lápiz (pencil): Tengo dos [____].
• Complete with the word that means "shoe": Busco mi [____].