O----------N----------E 分悬赏

were吧，虚拟语气。

if I _____ at home,I would write it.
选择A
如果是B的话 后面主句应该是虚拟语气，也就是I would have written it.

(B) were
你是对的
这是一种虚拟语气的用法
如果你学过高二、高三的语法就知道了

选B 是虚拟语气
例如:if i were you ,i would do like that

were