Answer:
una
Explanation:
Amiga= a friend who is a girl (girl friend)
Since you're talking about a girl you need to put an a after un
Answer:
Mi amiga es una buena estudiante.
Explanation:
The answer is 'una' because 'mi amiga' is singular and feminine.
She is not 'the' good student, she is 'a' good student. That is why it the answer is not 'la.'
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