When I entered I found my father on the sofa and in a magazine.A. sitting; absorbed B.

问题补充：

When I entered, I found my father on the sofa and in a magazine.

A. sitting; absorbed

B. sit; absorb

C. sitting; absorbing

D. sat; absorbed

答案：

(答案→)A. sitting; absorbed

B. sit; absorb

C. sitting; absorbing

D. sat; absorbed

解析：考察非谓语动词.句意:但我进去时,我发现我的父亲坐在沙发上,全神贯注于一本杂志.现在分词表示正在进行的伴随性动作,和被修饰词是主谓关系.过去分词表示被修饰词被动的发生过的动作,和被修饰词是动宾关系.sit是父亲的伴随性动作,下文父亲是被吸引的对象,可知选A.