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 The bell ____ the end of the period rang and we had to stop our discussion

A．indicating                             B．indicated

C．to be indicated                         D．being indicated

The bell ____ the end of the period rang and we had to stop our discussion

     A. indicating                   B. indicated                    C. to be indicated    D. being indicated

The bell ____ the end of the period rang and we had to stop our discussion

       A. indicating              B. indicated                C. to be indicated    D. being indicated

The bell______ the end of the period rang and we had to stop our discussion.

A. indicating　 B. indicated　 C. to be indicated D. being indicated