Located in central Africa,____a very unusual lake. ____of the largest lakes in the world; it is also one of the youngest. Estimated to be about 15,000 years old, it is a relative baby compared with Earth’s other very large lakes,____more than two million years old. Yet judging by the variety of life in it, Lake Victoria____a much older body of water. Usually, lakes need a much longer time____by a diverse array of life-forms. ____common for new lakes to contain only a small number of species. Lake Victoria, however, is____with colorful fish, most notably, cichlids. There are ____500 different species of just this one type of fish.

TOEFL practice - Language form and meaning 2

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