Lesson11. Being Environment-Friendly

Gap-fill exercise.

  
Look at the pictures and fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
(from English Compoition textbook, Neung Ryull YoungeoSa)
   cans and bottles      disposable cups      energy      is polluting      is sleeping      is washing      necessary      open      water pollution   
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1. A man . The windows are with the air conditioner on. Consequently, it is clear that he is wasting .
2. People are using instead of mugs. There are mixed with garbage, all over the place. Therefore, it's that they separate garbage to keep the enviroment clean.
3. A woman dishes. She is using too much detergent. Thus, she water in a way. It's a pity that a lot of fish become sick because of .