Question

¿comparten Uds. el sándwich de jamón y queso? Sí, nosotros______el sándwich.

Answer 1

Nosotros compartimos el sándwich.
Since the first sentence used "comparten," you can assume that the same verb, which is "compartir," will be used in the next sentence, but it needed to be conjugated for "nosotros."

Answer 2

The correct term would be "compartimos". "Si, nosotros compartimos el sandwich".