◎ 题干
—Does your sister work as a teacher in Canada?
—No, but she once  _________there for five years.
A.taughtB.had taught C.has taught D.would teach
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“—Does your sister work as a teacher in Canada? —No, but she once _________there for five years.A.taughtB.had taught C.has taught D.would teach…”主要考查了你对  【一般现在时】【将来进行时】【过去完成进行时】【过去将来时的被动语态】  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。