◎ 题干
Mr. Zhang is busy ________ his book now.

[     ]

A. writs
B. to write
C. writing
D. write
◎ 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“Mr. Zhang is busy ________ his book now. [ ]A. writs B. to write C. writing D. write …”主要考查了你对  【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。