题目内容
【题目】Jack's grandfather died of a serious (ill) last year.
【答案】illness
【解析】句意：杰克的祖父去年死于重病。ill形容词，病的；illness名词，a serious illness重病，形容词修饰动词。故填illness。
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题目内容
【题目】Jack's grandfather died of a serious (ill) last year.
【答案】illness
【解析】句意：杰克的祖父去年死于重病。ill形容词，病的；illness名词，a serious illness重病，形容词修饰动词。故填illness。