Read the text and fill in the gaps. Type the words separating them with a comma.
As ___ breaks over the vast Serengeti an elephant ___ slowly wanders to the side of the ___ to drink, nearby a pride of ___ is
lazing in the dry yellow ___ and a wild dog howls in the ___. The waterhole is a gathering ___ for the wildlife in this part of the Serengeti and for ___, too. At night, the animal ___ reigns over the area but the day brings ___ to photograph the wildlife, ___ to study the ecosystem and ___ tribesmen to water their herds of ___. It appears that animals and humans are managing to live together in ___ in one of the last great wildlife refuges in ___.