how to say in arabic"what's your hobby?I really like dancing,I dance since I was 4,from 15 years"

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what's your hobby ? in arabic speaking = ma heya hewayatok?  ماهي هوايتك

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what's your hobby = ما هى هوايتك

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what's your hobby? : ما هى هوايتك؟ 
I really like dancing : انا حقا احب الرقص
I dance since i was 4: انا ارقص منذ ان كان عمرى 4 سنوات 
from 15 years من 15 سنه

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ما هي هويتك ؟؟ في الحقيقة أنا أحب الرقص أنا أرقى منذ كنت في الرابعة من عمري من خمسة عشر عاما