I would have written before but I______ill.A.have beenB.would beenC.had beenD.were

学历类 专四 已帮助 人

I would have written before, but I______ill.

A.have been

B.would been

C.had been

D.were

请帮忙给出正确答案和分析,谢谢!

热搜:i型呼吸衰竭主要见于什么