Don’t be angry with him. He didn’t make the mistake .A. in turnB. on purposeC. by accident

问题补充：

Don’t be angry with him. He didn’t make the mistake .

A. in turn

B. on purpose

C. by accident

D. in total

答案：

A. in turn

(答案→)B. on purpose

C. by accident

D. in total

解析：短语辨析题。A. in turn依次、轮流 B. on purpose故意 C. by accident 偶然D. in total 总共 “别生他的气，他不是故意犯错的” 选B