All the bees 　　 had been at nearby feeding place were doing the circling dance.

A.which　　　　　B.what　　　　C.that　　　　　D.how

All the bees　　had been at nearby feeding place were doing the circling dance.

1. A.
   which
2. B.
   what
3. C.
   that
4. D.
   how