Gap Fill - Human Teeth - Level 0

HOW TO PLAY:

  • Choose the correct word from the drop-down menus below.
  • Click the button at the bottom to check your answers.
  • Press the "refresh" button on your browser to play again.
  • After this paragraph, go to Paragraph 2.

   ancient      fossil      how      machine      million      rock      similar      strongest      teeth      world  

Paragraph 1

Researchers have found humans got . They say teeth came from an fish 400 years ago. They used the X-ray in the to study a of the fish. The fish was inside . Researchers found that the fish's teeth were very to human teeth.

Now go to   Paragraph 2.

Back to the human teeth lesson.

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