...; 2,...; 3,...; 4,...B. RIVERS ARE ONE OF THE WORLD'S MOST IMPORT...

1,...; 2,...; 3,...; 4,...B. Rivers are one of the world's most important natural 1. _____. Many cities are on large rivers, andalmost every country 2. _____ at least one river that plays an important part 3. ____ the lives of its people.Besides transportation, rivers supply food, water for crops, water to drink, 4. _____ opportunities forrecreation.