My hair is too long . I must at once. A. get it cutting B. got it cutting C. get it cut

问题补充：

My hair is too long . I must at once.

A. get it cutting B. got it cutting C. get it cut

答案：

解析：get sth done这是get作为使役动词的用法，理解为“使某人/物。怎么样”。情态动词后面动词用原形，所以选C。