◎ 题干
— Shall we visit Jim tonight?  
— OK. To make sure that he's in, we'd better call him up____ .    
[     ]
A. in exchange
B. in return    
C. in brief      
D. in advance
◎ 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“— Shall we visit Jim tonight?— OK. To make sure that he's in, we'd better call him up____ .[ ]A. in exchange B. in returnC. in briefD. in advance…”主要考查了你对  【介词和介词短语】  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。