They were surrounded by the enemy but finally they out of the encirclement.A. managed br

问题补充：

They were surrounded by the enemy, but finally they out of the encirclement.

A. managed breaking

B. tried breaking

C. managed to break

D. tried to

答案：

A. managed breaking

B. tried breaking

(答案→)C. managed to break

D. tried to

解析：理解句型是关键。manage to do sth.成功的做了某事，强调成功。

try to do sth. 尽力做某事 try doing sth. 尝试做某事，后两个均不强调成功了。根据句意：他们被敌人包围了，但最终他们成功的突围了。