1
The diagram shows a mouth.

What are the parts of our body labelled with X, Y and Z?
| X | Y | Z | |
| A | Mouth | Lip | Tongue |
| B | Lower lip | Tongue | Teeth |
| C | Upper lip | Tongue | Teeth |
| D | Upper lip | Teeth | Tongue |
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A
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B
-
C
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D