Everyday in homes all over the world, people waste huge(26) _______of energy and water. Hong Kong is estimated to waste about 5 billion USA worth of energy a year. This is due to their bad habits. (27)_______,leaving lights or air- conditioners on when no one is in the room wastes a lot of energy. Using too (28)_______water or not fixing dripping taps also contributes the problem. Most people do not realize that saving energy in their home will actually save them money. If people use less energy, gas and electricity bills will become lower. Most of the way we can use to decrease energy (29) _______ in the home are very simple. The most obvious one is turning off household appliances when they are not (30) _______use or equipping our homes with energy-saving bulbs. Question 26. A. numbers B. amounts C. sums D. qualities Question 27. A. On the contrary B. In addition C. For example D. In contrast Question 28. A. little B. few C. much D. many Question 29. A. consume B. consumption C. usage D. resources Question 30. A. in B. on C. by D. at