(2014·福州市高中毕业班质量检查)Across all media，people are debating about________we need to keep track of every ...
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题目内容：
(2014·福州市高中毕业班质量检查)Across all media，people are debating about________we need to keep track of every school bus on China’s road.
A．how B．whether
C．which D．where
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