问题
选择题
— The doctor is busy ________ his work.
A．at
B．for
C．with
D．on
答案
答案：C
题目分析：句意：这个医生正在忙他的工作。is busy with sth忙于某事，固定结构，故选C
点评：短语的固定句型是中考的必考语言点，多数出现在单项选择和完形填空中。be busy with sth="be" busy doing sth某与做某事，平时加强记忆即可。