在空格处填入合适的词完成这封信。
Hi, Lisa,
I can't wait to tell you this! I went to the Great Wall today! It is amazing! The Great Wall is about 2, 000
years old and it _____________ about 6, 000 kilometres long! I was really excited and _____________ many
pictures. I _____________ show you later.
And guess what? I _____________ by train! I met a girl, Lina, on the train. We talked all the way to the
Great Wall. She told me something about the railway. It is one of China's earliest railways! Isn't that interesting?
Yours, Lydia
