Hello. I'm your new pen friend.(你好。我是你的新筆友。)

He hopes to become your pen friend.(他希望能做你的筆友。)

She was his pen friend.(她是他的筆友。)

Everyone in Caitlin's class was supposed to choose a pen friend from another country.(凱特琳班上的每個人都應該選擇一個來自其他國家的筆友。)

I hope that my pen friend is a girl who is of the same age as me.(我希望我的筆友是一位和我同齡的女孩。)

I have a great pen friend.(我有一個很好的筆友。)

This letter from your Australian pen friend.(來自澳大利亞的筆友的信。)

Who can be your pen friend?(誰能成為你的筆友？)

One way to find a pen friend is to join a club.(找筆友的一種方法是加入俱樂部。)

I have a pen friend.(我有個筆友。)