Read the following passage and answer the questions.
Factories use heavy machinery which is run by electricity. Paper mill needs electricity for operating its machines. For example, the paper mill requires nearly 25 Mega Watt every year. More than half of the electricity requirement is met through the factory’s own power generators. Besides electricity, the mill requires a large quantity of clean water throughout the year.
1. ………. use heavy machinery.
2. The paper mill requires nearly ………… every year,
3. Besides electricity, the mill requires a large quantity of ………….. water.