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

1. We should fix the leaking tap. It's a __________ of clean water!

2. Takeaway food includes a lot of unnecessary __________ such as single-use containers and plastic bags.

3. We always try to buy food packed in recyclable __________.

4. A creative way to __________ old greeting cards is to make gift tags and bookmarks.

5. The waste in open __________ sites can release harmful gases into the atmosphere.