A MINORITY B. COMMUNICATE C. CELEBRATION D. EFFICIENCYREAD THE FOLL...

2. A minority

B. communicate

C. celebration

D. efficiency

Read the following passages and choose the best answer for each blanket.

Rivers all of the world’s most important natural resources. Many cities are on large

rivers, and__________ every country has at least one river that plays an important part in

the lives if its people.

Besides transportation, rivers _________ food , water for crops , water to drink and

opportunities for recreation for people who live along their bank and in order to get water

for crops engineer sometimes build a dam__________ a river and let the water become a

lake behind the dam. Then people can use their water not only to irrigate fields but also to

make electricity for home and industries.

However the water often becomes__________ when cities on river bank grow inside

and the number of industries increases. We are learning that it is necessary to keep rivers

clean if we want to enjoy the ________ of the natural resources.