问题
选择题
Jack describe 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
答案
答案：D
考查情态动词表推测。因为是对过去事实的推测，要用情态动词+完成时态，排除A,C；根据as a strong-willed man.作为一个意志坚强的人，可知他许多年前肯定是一个勇敢的男孩。所以选D，表示肯定……。