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Units 1-3
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Exercise 2
Units 1-3
Units 4-6
Units 7-9
Units 10-12
Units 13-15
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Exercise 1
Exercise 2
Exercise 3
Exercise 4
Exercise 5
Units 1-3:
Exercise 2
Write 'a' or 'an'.
This is
a
cat.
What's this? It's
an
orange.
It's
a
rubber.
This is
an
apple.
What's this? It's
an
elephant.