Exercise 1: Choose the word or phrase among A, B, C or D that best fits the blank space in the following passage. Simple ways you can help to make a difference During high school, it's easy to become stressed out in balancing a number of (1) ________, including spending time with friends, family, studying participating in extracurricular activities, and planning for the future. But between all the stress and pressure of keeping up with your various activities, it's important to contribute to the community, and make (2) ________ to protect the environment. So here are a few tips on ways you and other teens can go green." One of the easiest ways teens can go green is simply to turn off the lights. Open up the curtains and (3) ________ the natural sunlight brighten up the room, or turn off the lights and fans when you leave a room that no one else is in. Studies have indicated that (4) ________ electricity helps to reduce global warming. Another way to go green is to use your bike, or walk. Using your bike or walking also reduces (5) ________ and it is a great way to exercise. Therefore, by riding a bike or walking, not only are you helping the environment, you are (6) ________ contributing to your own health. You could also try (7) ________ a reusable water bottle. Buying a reusable bottle is a smart investment because not only do plastic water bottles often go un-recycled, but buying a reusable water bottle can actually save you money over buying plastic bottles over and over again. Another great idea is to (8) ________ your computer and all other electronics before you go to bed, or after you are done using them. Although you may no longer be using your computer, it stills uses electricity in small amounts that add up. In fact, most appliances use some amount of electricity even when you aren't using them, so it's best to get into the habit of unplugging them when you can. Finally, you can go green by turning off the faucet. Many people leave the faucet (9) ________ while they brush their teeth, but this is just wasting water. Turning the faucet off (10) ________ you brush your tooth can save the world a lot of water.

Exercise 1: Choose the word or phrase among A, B, C or D that best fits the blank space in the following