Articles# 6 (a, an, some)

part 4 Indefinite article + some 4 exercises , by Irina
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Repaso#1 (a, an)

indefinite articles, by jim
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Repaso#2 (a, an)

Articles, by GreatFalcon
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Opposite Adjectives

Practise some opposites.
OPPOSITES, by squiroz
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Einstein, the talking parrot

Birds use tools

Chimps use tools

Jane Goodall 40 years ago...