19.The problem now is very important. A.being discussed B.discussed C.discussing D.to be discussed 查看更多

 

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 The problem ________now is very important.

     A.being discussed                               B.discussed           

       C.discussing                                    D.to be discussed

 

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.The problem ________now is very important.

A.being discussed

B.discussed

C.discussing

D.to be discussed

 

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.The problem ________now is very important.

     A.being discussed   B.discussed    C.discussing     D.to be discussed

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