单亲父母必须独自抚养孩子。

Single parents have to raise a ___family on their own.

保罗和艾莉森希望很快生孩子。

Paul and Alison are hoping to start a ___family soon.

有些人也想要孩子，因为他们想成为父亲或母亲。

Some people also want to have a ___family because they want to be a father or a mother.