收养16 years old boy，just 失去亲父, how to申请?

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收养16 years old boy，just 失去亲父, how to申请?收养16 years old boy，just 失去亲父, how to申请到加拿大? 母亲失去监护权，以后不可能申请到加拿大探亲的机会。
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0 ?4 c5 ]& |  V6 o: L5 }7 lI have one girl and one boy myself.
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! B9 A  M: x/ e; ?2 v7 e) dAny one might know how to do this or help? How to do the paper work in China?
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* H8 k/ ?: h( H8 RThanks first.