into use in April 2000, the hotline was meant for residents reporting water and heating supply breakdowns. A. Put B. Putting C. Having put D. Being put 解析:put sth. into use “让--投入使用 .显然.put 和句子主语the hotline 构成被动关系.所以用表示被动的过去分词.C项只表示完成.不能表示被动. 查看更多

 

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     into use in April 2000, the hotline was meant for residents reporting water and heating supply breakdowns.

       A.Put                     B.Putting                C.Having put           D.Being put

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___ into use in April 2000, the hotline was meant for residents reporting water and heating supply breakdowns.

A. Put       B. Putting     

C. Having put    D. Being put

 

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 ______ into use in April 2000, the hotline was meant for residents reporting water and heating supply breakdowns.

A. Put                  B. Putting          C. Having put           D. Being put

 

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______ into use in April 2000, the hotline was meant for residents reporting water and heating supply break downs.


  1. A.
    Put
  2. B.
    Putting
  3. C.
    Having put
  4. D.
    Being put

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___ into use in April 2000, the hotline was meant for residents   reporting water and heating supply
breakdowns.  
[     ]
A. Put        
B. Putting    
C. Having put    
D. Being put

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