______no air or water, there would be no life in the world.

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______no air or water, there would be no life in the world.

A. There was

B. There were

C. Is there

D. Were there

参考答案:

D12.答案为D 参考译文:如果没有空气和水,世界上将不再有生命。此题考查与现在事实相反的虚拟语气的倒装结构。