◎ 题干
—Mr. Li ______ to Mary carefully when I entered the classroom this morning.
—He is very patient ______ he is young.
A.talking; but B.was talking; though
C.talks; though D.talked; however
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“—Mr. Li ______ to Mary carefully when I entered the classroom this morning.—He is very patient ______ he is young. A.talking; but B.was talking; though C.ta…”主要考查了你对  【实义动词的单数第三人称形式】【实义动词】【动词短语】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。