【题目】Their requirement that he one year's experience is reasonable.
A.had
B.has
C.have
D.would have

【答案】C
【解析】句意：他们要求他有一年的工作经验是有理由的。requirement后边用that引导同位语从句，从句中谓语动词用should+动词原形，should可以省略，故选C。