◎ 题干
He ____ in our school for 20 years and he ____ here in 1977.

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A. has taught; came
B. has taught; has come
C. taught; came
D. has taught ; has came
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“He ____ in our school for 20 years and he ____ here in 1977. [ ]A. has taught; came B. has taught; has come C. taught; came D. has taught ; has came …”主要考查了你对  【一般过去时】【现在完成时】  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。