帮忙做一道需拟语气的选择题：I would have written before,but I （ ） ill
问题描述：
帮忙做一道需拟语气的选择题：I would have written before,but I （ ） ill
I would have written before,but I （ ） ill.
A.were B.had been C.would be D.was
答案里选的是D.was,请问为什么不选B.had been呢,我觉得是选B呀,
答
你选B的话 .那你将后句看成前句的从句.他们是表转折的并列句.因为BUT是并列连词.生病时过去的事实.所以D对.前句是个假设.