_____no air and water,there would be no life in the world.

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_____no air and water,there would be no life in the world.
A:There was
B:There were
C:Is there
D:Were there
应该选什么,为什么?

D:Were there
在虚拟语气条件句中从句谓语动词有were, had, should等词,可将if 省略,把 were, had, should 移到主语之前,采取部分倒装
例如：
Were I you, I would try it again. 我是你的话,就再试一次

_____no air and water,there would be no life in the world. 1,（A ）no air or water,there would be no life in the world ______ no air or water,there would be no life in the world. （）no air or water,there would be no life in the world There was no air or water,there would be no life in the worl there would be no life without water and air.怎么换特殊疑问句 without ( ) (闪电）,there would be no plant life in the world There would be no life ___ water. there will be no life without air ( )water 这里是用and 还是or there will be life while there is water and air There would be no heat or air-conditioning and no toilets in 请问：If there were no water in the world,everything___ A.would