Did he break it accidentally?- No .A. with purposeB. by chanceC. on purposeD. by m

问题补充：

--- Did he break it accidentally?

--- No, .

A. with purpose

B. by chance

C. on purpose

D. by mistake

答案：

A. with purpose

B. by chance

(答案→)C. on purpose

D. by mistake

解析：考查词组辨析：A. with purpose介词错误，应该是on purpose，有目的B. by chance偶然的，C. on purpose故意地D. by mistake错误的，句意：--他偶然的打破它的吗？--不故意的。选C。