摘要：33．Whether ways can be found to stop pollution or not is just worries the public． A．why B．which C．that D．what
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Whether ways can be found to stop pollution or not is just ____ worries the public．
A．why B．which C．that D．what
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Whether ways can be found to stop pollution or not is just _____ worries the public.
[ ]
A. why
B. which
C. that
D. what
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B. which
C. that
D. what