Final answer:
The best Spanish word to complete the sentence is 'estas'.
Step-by-step explanation:
The best Spanish word to complete the sentence is estas.
'Gustar' is a Spanish verb that means 'to like'. It is used with an indirect object pronoun to indicate what someone likes. In this case, 'me' is the indirect object pronoun, which means 'I'. The word 'galletas' means 'cookies'. The word 'estas' is the plural feminine form of the demonstrative adjective 'este', which means 'this' in English. Therefore, the sentence 'Me gustan galletas estas' translates to 'I like these cookies'.
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