题目内容
Jack described his father, who _______ a brave boy many years ago, as a strong–willed man.( )
A. would be B. would have been C. must be D. must have been
D
句意为“杰克把他的父亲描述为一个意志坚强的人,他的父亲多年前肯定很勇敢。”用must have been表示对过去事情的肯定推测。
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