Middle-class animals play hide-and-seek and watch talking videos.

One day, small animals were playing hide-and-seek in the forest. Bear to catch, monkey, elephant and duckling to hide. The bear is lying on the tree. Count to one, two, three. The elephant is in the grass and the monkey is in the tree, but there are no ducklings. Suddenly, I heard the duckling shout "Help". It turned out that the duckling accidentally fell into the pit, and everyone was frightened. The little monkey found a box. At first, the box was too short for the duckling to reach. The elephant stuck its nose into the pit, but the pit was too slippery; The bear called a bucket of water and poured it into the pit. Smart boy, do you know what kind of animal will save this duckling?