Final answer:
The sentence 'I am buying presents for my sister' can be translated to Spanish as 'Estoy comprando regalos para mi hermana.'
Step-by-step explanation:
The sentence 'I am buying presents for my sister' can be translated to Spanish as 'Estoy comprando regalos para mi hermana.' In this sentence, 'I' is translated as 'Estoy,' 'buying' is 'comprando,' 'presents' is 'regalos,' 'for' is 'para,' and 'my sister' is 'mi hermana.' So the complete translation is 'Estoy comprando regalos para mi hermana.'
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