学进去

Hello, I am ______ envelope (信封). I am very ______ because I had a long trip. How was my trip? Let me tell you.

Two days ago, a little girl ______ a letter to her grandmother. She folded (折叠) the letter and put it inside of me. Then she ______ a stamp on me and wrote something on me.

She put me into a box. It was really dark. There I met other ______. Some envelopes were ______ than me. Some were smaller than me. We were ______ all over the world.

Suddenly, the door of the box opened. All of ______ were put into a big sack (麻袋). Then we were getting on a big plane!

Finally, I was at ______ house. Grandmother was very happy ______ me. I was happy too.