Your hair is too long. You’d better have it .A. cutB. to cutC. cuttingD. Cutted

问题补充：

Your hair is too long. You’d better have it .

A. cut

B. to cut

C. cutting

D. Cutted

答案：

(答案→)A. cut

B. to cut

C. cutting

D. Cutted

解析：

句意：你的头发太长了，你最好请人理一理。“ have + sth （宾语）+ 过去分词（宾语补足语）”意为“让 / 叫 / 使 / 请别人做某事”。宾语sth 后面用过去分词作宾语补足语，说明sth 与过去分词表示的动作之间是被动关系。根据句意，请人理发应是have hair cut 。Cut的过去式、过去分词与动词原形一致。故选A。