（）no air or water,there would be no life in the world______ no a_英语解答

（）no air or water,there would be no life in the world
______ no air or water,there would be no life in the world.
a.Were there b.There are c.There was d.Is there
答案给的是A,为什么啊别的选项不可以吗

人气：363 ℃　时间：2019-10-01 19:54:41

解答

这是虚拟语气的倒装句.原句为：
If there were no air or water,there would be no life in the world.