题目内容：

根据句意和汉语注释，写出单词的正确形式。

1.She is the _____________ (thin) girl in our class, she should take more exercise.

2.I am ___________ sorry for what I said. (true)

3.Which city is _____________ (far) to the sea, Beijing or Tianjin?

4.Li Lin keeps writing in English about his ____________ life. (day)