The Platypus

In the rivers of south-eastern Australia, you can find an animal called a 'platypus'. The platypus is one of the (STRANGE) animals in the world. It (EXIST) only in Australia and belongs to a group of animals called 'monotremes'.
When Europeans first saw an example of the animal in the 1700s, they (THINK) it was a joke. They (NEVER SEE) anything like it before and they refused to believe that it was a real animal. A (TWO) example arrived from Australia, and then more, and the scientists realised mat this unusual creature was real.
Today, the platypus (LIVE) in the waters around south-east Australia. It is not very rare, but some people worry that water pollution could be a problem as the water around Sydney gets (DIRTY). We still (NOT KNOW) much about this mysterious animal and we have a lot to learn.