One day, Xiaohong and Xiaoming made an appointment to read in the library. They came to the library happily, and there were many books in it. I smelled a book fragrance as soon as I entered the door. Xiaohong found a book among all kinds of books, looked at it and said to Xiaoming, I want to play on Mars. Xiao Ming said: Only when the country is developed can we get up. Let's work hard now.