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Mr. Barret doesn’t think that all bad language should be allowed. In his opinion, there are ______ that should be kept up.

         A. degrees　　　   B. levels     C. limits        D. standards

 Mr. Barret doesn’t think that all bad language should be allowed. In his opinion, there are ______ that should be kept up.

      A. degrees　　　        B. levels                  C. limits                     D. standards

Mr. Barret doesn’t think that all bad language should be allowed. In his opinion, there are ______ that should be kept up.

       A. degrees　　　   B. levels  C. limits  D. standards

Mr. Barret doesn’t think that all bad language should be allowed. In his opinion, there are ______ that should be kept up.

　 A. degrees　　　 B. levels　　 C. limits　　　 D. standards

Mr. Barret doesn’t think that all bad language should be allowed，In his opinion，there are _________that should be kept up．

　　 A．degrees　　　 B．1evels　　　 C limits　　　　　　　 D．standards