完形填空。Life is not easy, so I’d like to say “When anything happens, believe in yourself.”When I was a young boy, I was _1_shy to talk to anyone. My classmates often _2_me. I was sad but
Urbanization Until relatively recently, the vast majority of human beings lived and died without ever seeing a city. The first city was probably founded no more than 5,500 years ago. 38._ .
