The　　  question for them was to find out whether bees could tell each other the exact position of a feeding place.

A.left　　　　　　　　　　　　B.leaving

C.remained　　　　　　　　　　D.remaining

The　　 question for them was to find out whether bees could tell each other the exact position of a feeding place.

1. A.
   left
2. B.
   leaving
3. C.
   remained
4. D.
   remaining