摘要： we can have clean drinking water lies in effective measures will be taken by the government about water pollution. A. Whether ; that B. If ; that C. Whether ; what D. If ; what

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we can have clean drinking water lies in effective measures will be taken by the government about water pollution．

A.
Whether; that
B.
If; that
C.
Whether; what
D.
If; what

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________ we can have clean drinking water lies in ________ effective measures will be taken by the government about water pollution．

Whether; that

If; that

Whether; what

If; what

________ we can have clean drinking water lies in ________ effective measures will be taken by the government about water pollution．

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we can have clean drinking water lies in effective measures will be taken by the government about water pollution．