were i to do it ,i ____it some other way a will do b would do c would have done d were to do

这里应该考得是虚拟语气吧,were i to do it 相当于If I were to do it 后面肯定要接 将来完成式啊!
would should 后加完成式为什么用将来完成时还是不懂麻烦您了为什么would should could 加动此原形不行这些是语法知识，简单来说就是一些死的，曾经我们的老师就是要求我们背的，所以无道理可言。建议还是将那些必考的语法知识记住吧！！