Whenever I was in trouble he would do what he could me.A. helpB. helpingC. to helpD. hel

问题补充：

Whenever I was in trouble, he would do what he could me.

A. help

B. helping

C. to help

D. helped

答案：

A. help

B. helping

(答案→)C. to help

D. helped

解析：考查非谓动词。后句为省略，补全为he would do what he could do to help me，不定式作目的状语，故选C。