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16．More and more people have realized we won’t have cleaner water to drink unless something soon．A．was done B．will be done C．to be done D．is done 【查看更多】

 

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More and more people have realized we won’t have cleaner water to drink unless something ________ soon．


  1. A.
    was done
  2. B.
    will be done
  3. C.
    to be done
  4. D.
    is done

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More and more people have realized we won't have cleaner water to drink unless something ______
soon.
[     ]
A. was done      
B. will be done    
C. to be done    
D. is done

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More and more people have realized we won't have cleaner water to drink unless something ______ soon.

[     ]

A. was done
B. will be done
C. to be done
D. is done

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More and more people have realized we won’t have cleaner water to drink unless something______ soon．

A．is done          B．will be done          C．to be done            D．was done

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More and more people have realized we won’t have cleaner water to drink unless something

            soon.

A．was done         B．will be done      C．to be done       D．is done

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