Abuelos.
Mexican is not a language. The way you say grandparents in SPANISH is abuelos for both or abuela for grandmother and abuelo for grandfather.
Translation: No tengo abuelos.
You could say "Sí, tienes abuelos."
To give a real answer, you need to specify who is visiting the grandparents, because the conjugation of the ver "visitar" is different for each "person". "I visit my grandparents" is "visito mis abuelos", but "We visit my granparents is "visitamos mis abuelos".
Que está visitando would be the best way to say "He is visiting" in Spanish.
"Queridos para siempre los abuelos."
"Great grandparents" in Spanish is "bisabuelos". It is pronounced "beese-ah-BWAY-los". Please see this site for confirmation of the translation: http://www.answers.com/library/Translations
no. they're dead.
"Visiting" in Spanish is "visitando". It is pronounced "bee-see-TAHN-doe". Please see the Related link below for confirmation of the translation.
the grandparents = los abuelos
This would be"Tres de mis abuelos están viviendo".