单项选择题
A.Sounds good. I'll give you a call B.Take it easy C.Nice to see you back D.Yes, I've enjoyed it
A.Yes, you could. B.Speaking. C.Who are you D.Speak, please.
A.Chicago, Dallas, Kansas City, and St. Louis B.Atlanta, San Francisco, New Orleans, and Seattle C.Cleveland, Dallas, St. Louis, and Washington, D.C. D.Pittsburg, Miami, Houston, and Boston