Complete the following sentences using the correct forms of the words in 1.

Gap-fill exercise

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!
   containers      landfill      packaging      reuse      waste   
1. We should fix the leaking tap. It's a (1) of clean water!
2. Takeaway food includes a lot of unnecessary (2) such as single-use containers and plastic bags.
3. We always try to buy food packed in recyclable (3) .
4. A creative way to (4) old greeting cards is to make gift tags and bookmarks.
5. The waste in open (5) sites can release harmful gases into the atmosphere.