Mary is proud a record by running two laps this year.A. to breakB. to have brokenC. breaki

问题补充：

Mary is proud a record by running two laps this year.

A. to break

B. to have broken

C. breaking

D. having broken

答案：

A. to break

(答案→)B. to have broken

C. breaking

D. having broken

解析：试题分析：考查动词不定式的完成式