It is often said that teachers have very easy life. A. 不填；不填B. 不填；aC. the; 不填D. the; a

问题补充：

It is often said that teachers have very easy life.

A. 不填；不填

B. 不填；a

C. the; 不填

D. the; a

答案：

A. 不填；不填

(答案→)B. 不填；a

C. the; 不填

D. the; a

解析：老师泛指整个老师的职业用复数形式不加任何冠词；过着一个。。。生活，固定搭配，have\live a …life