高位肠梗阻（）

A.呕吐出现早并严重，腹胀轻

B.腹胀明显而呕吐相对较轻

C.阵发性剧烈腹痛，可见肠型

D.持续性腹痛伴阵发性加重，可见孤立固定的肠襻，并有腹部压痛、反跳痛、肌紧张

E.持续性胀痛，肠鸣音减弱

—  Do you think we should accept that offer? 

—  Yes, we should, for we _____ such bad luck up till now, and time _____ out.[ ]

A. have had; is running

B. had; is running

C. have; has been run

D. have had; has been run