◎ 题干
There is a blackboard _______ the classroom and another one _______ the classroom.of
[     ]
A. in the front of, at the back of
B. in the front of, at back of
C. in front of, at the back of
D. in front of, at back
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“There is a blackboard _______ the classroom and another one _______ the classroom.of [ ]A. in the front of, at the back of B. in the front of, at back ofC. i…”主要考查了你对  【介词短语】  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。