______no air or water, there would be no life in the world.
A、
There was
B、
There were
C、
Is there
D、
Were there
【正确答案】
D
【答案解析】
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。
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