To this happening again, John suggested that the source of all the water supplies .A, stop, be exami

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To      this happening again, John suggested that the source of all the water supplies      .
A, stop, be examined                      B, keep, should be examined
C, prevent, examined                  D, stop, was examined

题型：单选题难度：中档来源：不详

答案

略

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To this happening again, John suggested that the source of all the water supplies .A, stop, be exami

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