Ⅰ ( )1. Where have you been? ( )2. What happened to your brother? ( )3. What is the population of the U.S.A.? ( )4. How long have you been like this? ( )5. Do you want to be a greener person?
Ⅱ A. So do I. B. Yes, I'd love to. C. Since last week. D. He had an accident. E. About 296 million. F. Once a month. G. I've been to the library.
