◎ 题干
As the years passed, many occasions-birthdays, awards, graduations-         with Dad's flowers. 
[     ]
A. are marked                  
B. were marked      
C. have marked                  
D. had marked
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“As the years passed, many occasions-birthdays, awards, graduations- with Dad's flowers.[ ]A. are markedB. were markedC. have markedD. had marked…”主要考查了你对  【一般过去时的被动语态】  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。