题目内容：

Mary is a little girl. She is only five. She doesn’t go to school and she doesn’t know how to read or write. But her sister Lena is a school girl. She is ten years old.

One day, Lena sees her little sister at the table with a pen in her hand and a piece of paper in front of her. “What are you doing, Mary?” she asks. “I’m writing a letter to my friend Kitty” says Mary. “But how can you?” asks Lena. “You don’t know how to write at all!”

“Well, it doesn’t matter(没关系), because Kitty doesn’t know how to read.”

根据文章提供的信息，判断正（T）、误（F）。

1.Mary doesn’t know how to write, but she can read.

2.Mary goes to school with Lena.

3.Kitty is Lena’s sister.

4.Mary writes to Kitty with a pen.

5.Kitty can’t read Mary’s letter.