Mary’s grandparents_____.

　　定位到文中第六段的第一、二句，“A few days later, Mary got a phone call from her grandparents, thanking her for the lovely fruit. They said it was a healthy，tasty,and very thoughtful gift.”，几天后，Mary接到了她的祖父母的电话，感谢她可爱的水果。他们说这是一种健康、美味、体贴的礼物。故选A。