Five students stand in pairs with their backs to the blackboardFive students stand in pairs with their backs to the blackboard
A curious pair of penguins on the edge of the jungleA curious pair of penguins on the edge of the jungle
A pair of red macaw parrots are looking in the same directionA pair of red macaw parrots are looking in the same direction
Silhouettes of a pair of grazing horses in the fogSilhouettes of a pair of grazing horses in the fog
Waves are running and seagulls are in pairs on the shoreWaves are running and seagulls are in pairs on the shore