Final answer:
The correct pair of words that completes the sentence is 'autant de, que'.
Step-by-step explanation:
The correct pair of words that completes the sentence is autant de, que.
The sentence reads: Anne a autant de robes que son amie, which translates to 'Anne has as many dresses as her friend.'
Here, 'autant de' means 'as many' and 'que' means 'as' or 'as her.'
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