◎ 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n多题专家分析,试题“The students entered the classroom, smiling and _____, and _____ down to have their lessons.[ ]A. talked; satB. talking; sittingC. talking; satD. talked;…”主要考查了你对  【现在分词】【一般过去时】  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。