"con mucha frequencia practico deprtes para mejorar"
The question is: With what frequency do you practice sports? So it the answer is once a week, you respond by saying: un tiempo por semana.
To respond to '¿Con qué frecuencia practicas deportes?', choose an adverb of frequency such as siempre, a veces, or nunca, and combine it with the verb 'practicar'. You can also specify which sports you play and how often for a more detailed answer. For example, you might say 'Siempre practico fútbol los sábados' (I always practice soccer on Saturdays).
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