Natural sources of energy are energy from………..

Choose the word or phrase among A, B, C or D that best fits the blank space in the following passage.

Running of The Bulls - Pamplona, Spain

The Running of the Bulls is a (1) ____ of the famous San Fermin festival - a practice that involves running in front of a small group of bulls (typically a dozen) that have been let loose on a course of a town’s streets. A first firework is set off at 8 a.m. to alert the runners that the corral gate is (2)_____. A second firework signals that all six bulls have (3)______ released. The third and fourth fireworks are signals that all of the herd has entered the bullring, marking the end of the event. Every year between 200 and 300 people (4)_____ injured during the run (5)_______ most injuries are due to falls and are not serious. So you think you support it?

Choose the one option that best completes the passage.

Saving energy means saving money. One way to save money is to (1) _______ incandescent lights with fluorescents. This can result in a savings of more than 50% (2) _______ your monthly lighting costs. When it’s time to replace old appliances, it’s wise to spend a bit more for an energy-efficient (3) _______ , and be sure that you are taking advantage of (4) _______ settings already on your current refrigerator, dishwasher, washing machine, or dryer. Windows provide another opportunity to (5) _______ your energy costs. Caulk old windows that might be leaky to prevent drafts, and choose double-paned windows (6) _______ you’re building an addition or replacing old windows. (7) _______ areas of your home or apartment offer opportunities to save energy and money. The results are significant and are (8) _______ worth the effort.