单项选择题
A. What should I do B. Thank you, mom. C. Where have you been D. Yes, he is. E. What was wrong with him F. Were you sick G. Where is the hospital H. I’m sorry to hear that.
A．conscious B．conceited C．talented D．content
A．are forms of biological development B．have actually developed from hunting C．are essentially forms of taming the prey D．have changed the ways of hunting