◎ 题干
The students entered the classroom, smiling and ______, and ______ down to have their lessons.
[     ]
A. talked; sat
B. talking; sitting
C. talking; sat
D. talked; sitting
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“The students entered the classroom, smiling and ______, and ______ down to have their lessons.[ ]A. talked; satB. talking; sitting C. talking; sat D. tal…”主要考查了你对  【动词的过去式】【现在分词】  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。