The world’s oil supply
A. haven been gradually being exhausted
B. is being gradually exhausted
C. is gradually exhausted
D. has gradually exhausted
正确答案：B
10．答案为B世界石油供应量正在逐渐被耗尽该题谓语动词应使用正在进行时的被动态结构是am\/is\/are+being+过去分词
Theworld’soilsupplyAhavenbeengraduallybeingexhauste
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