so he didn’t come to school last week.A. Though he was illB. Being illC. Having been il

问题补充：

，so he didn’t come to school last week.

A. Though he was ill

B. Being ill

C. Having been ill

D. He was ill

答案：

A. Though he was ill

B. Being ill

C. Having been ill

(答案→)D. He was ill

解析：so 用于连接表示因果关系的并列句。