The topic,        we devoted a full discussion, is to be presented to our teacher at class.

1. A.
   which
2. B.
   where
3. C.
   to which
4. D.
   for which

The topic,_____we devoted a full discussion, is to be presented to our teacher at class.

       A．which       B．where       C．to which   D．for which

The topic,        we devoted a full discussion, is to be presented to our teacher at class.

       A．which       B．where       C．to which   D．for which

The topic,        we devoted a full discussion, is to be presented to our teacher at class.

A．which            B．where           C．to which            D．for which

The topic,        we devoted a full discussion, is to be presented to our teacher at class.