请教多伦多如何申请牛奶金？

msc__8ZTZ

我们一家移民来多伦多不到4个月，早就看到有牛奶金可以领取。上网申请，填写rc66-fill-21e.pdf文件，其中要提供一些证明文件，其他的基本搞定，但有一个不清楚要提供哪些资料：
• proof that you were the person who is primarily responsible for the care and upbringing of the child (at least three documents). See the list of acceptable documents on the next page
这些的内容举例是：
As proof that you were the person who is primarily responsible for the care and upbringing of the child, you have to provide a photocopy of at least three documents, such as:
• a letter from the daycare or school authorities indicating the child’s home address and contact information on file
• a letter from a social worker, a band council, or a resettlement officer stating that they have personal knowledge that the child lived with you for the period you indicated
• a registration form or a receipt from an activity or club the child was enrolled in for the period you indicated
• a court order, decree, or separation agreement that explains the type of custody arrangement you have (for example, shared custody) and clearly shows the living arrangements for the child
• any other document showing that the child lived with you for the period you indicated
我仔细的看了一下，感觉要求挺模糊的，不确定具体哪些证明，而且要三类证明文件。我只搜集到了学校寄来的孩子成绩单，其他的就不知道还有哪些能证明了。不知道大家在申请牛奶金时这项时提供了哪些资料？谢谢！