—It's a pity that Andrew didn't want to go to the conference.— willing to go we could have

问题补充：

—Its a pity that Andrew didn want to go to the conference.

— willing to go，we could have paid all his expenses.

A. Had he been

B. Being

C. Was he

D. He had been

答案：

(答案→)A. Had he been

B. Being

C. Was he

D. He had been

解析：考查虚拟语气与倒装。根据第一句中的时态可知此处是对过去情况的虚拟，意思是“如果他愿意去，我们会支付他所有的费用”。此处是省略了虚拟条件句中的if而引起的倒装，其正常语序应为“If he had been willing to go”。