这里是虚拟语气
原句可以转化为
If _____ possible,I would have paid a visit to you.
这里是与过去事实相反,由主句中would have paid可看出
所以空里应该是 it had been.即原题中的B
如果楼主还是有点不懂可以补一点虚拟语气的知识
这里是虚拟语气
原句可以转化为
If _____ possible,I would have paid a visit to you.
这里是与过去事实相反,由主句中would have paid可看出
所以空里应该是 it had been.即原题中的B
如果楼主还是有点不懂可以补一点虚拟语气的知识