把名词变复数答:hospitals,offices,doctors,workrs,managers,secretaries,photos,families,dictionaries,libraries,pictures,gyms,science,buildings,people,aunts,grandfathers,grandmothers,grandparents,uncles,sisters,grandma,grandpa,emails,oranges,drinks,fruits,vegetables,beef,carrots,melon,milk,onion,potatoes,tomatoes ...