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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. F- Q9 u; a6 v7 Q: \I have one girl and one boy myself.
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# w* ]( E' I) W# ^0 l5 lAny one might know how to do this or help? How to do the paper work in China?

; i3 ~. m, V' GThanks first.