◎ 题干
As the mid-term examination was drawing near,the teachers were busy___________the test papers.    
[     ]
A. preparing                    
B. preparing for    
C. to prepare                    
D. to prepare for
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据n多题专家分析,试题“As the mid-term examination was drawing near,the teachers were busy___________the test papers. [ ]A. preparingB. preparing forC. to prepareD. to prepare for…”主要考查了你对  【动名词】  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。