敢问单选题:If I ______ his address,I could write to him.这句是主情从现还是虚拟语气

问题描述:

敢问单选题:If I ______ his address,I could write to him.这句是主情从现还是虚拟语气

knew
if 主语 过去式,主语 would do 结构 ,是虚拟
不明白的再问哟,请及时采纳,多谢!