Judging from what he said, Jack seemed ______ everything already.

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问题 Judging from what he said, Jack seemed ______ everything already.

选项 A、understand
B、to be understanding
C、understandable
D、to have understood

答案D

解析不定式表示的动作先于谓语动词表示的动作时，不定式用完成形式。

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大学英语三级A级

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