His grandfather and grandmother are health.这句话那错了

题目

His grandfather and grandmother are health.这句话那错了
His grandfather grandmother are health.
哪里错了，大家谁会，帮帮我

答案

最后一个单词 health 用错了.
health ：健康.是个名词.而句子的意思是“他的爷爷奶奶都很健康”,显然要用形容词“healthy”健康的.
你的句子翻译成“他的爷爷奶奶都是健康”.