据我所知，他们必需做的只是来见他们抚养的孩子，并填写一份表格。
As far as I know, all they have to do is to come and see the child they want to bring up and fill up a form.
据我所知，他们必须做的只是来见一见他们想抚养的孩子，并填写一份表格。
As far as I know, all they have to do is come and see the child they want to bring up and fill up a form.
据我所知，他们必须做的只是来见一见他们想抚养的孩子，并填写一份表格。
As far as I know, all they have to do is come and see the child they want to bring up and fill up a form.
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