The experienced teachers try their best the younger ones experience.A. to help…gettingB.

问题补充：

The experienced teachers try their best the younger ones experience.

A. to help…getting

B. help…get

C. to help…to get

D. helping…get

答案：

A. to help…getting

B. help…get

(答案→)C. to help…to get

D. helping…get

解析：固定搭配try one’s best to do sth努力做某事；help sb （to） do sth帮助某人做某事；句义：这些有经验的老师努力帮助年轻人得到更多的经验。故C正确。