英语翻译句子问题！

你妈妈有几个姐姐？
How many sister does your mother got?可不可以？？？

我祖父母有两个孩子，一个是我爸爸，另一个是我姑姑。

_____________________.One is my father,the other is my aunt.

My grandparents has/have?? two children/kids???

我想确认一下，老师总是挑我毛病。不服，呜呜，至少得给我个理由啊！

我父亲叫汤姆，我母亲叫玛丽。

My father's name is Tom,my mother's name is Mary.

我哪错了？？？？

1.How many sisters does your mother have?

2My grandparents have two children.One is my father and the other is my aunt.

3. My father 's name is Tom and my mother's name is Mary。

你后面两个句子都少了and，连接两个完整的句子要用and

第一个句子sister少了s