单项选择题
A. I’m sorry you can’t. B. Sure, it’s my pleasure. C. Well, take things easy. D. I’ll be glad to. E. Thank you. F. Really G. You’re always welcome. H. I’m sorry to hear that.
A．the surface temperature is too hot B．it is too cold there C．it is severely short of water D．it has a very thin atmosphere
A．taking drugs once in a while will not be harmful B．a single smoke of opium will make you an addict to it C．the authorities are honest in dealing with the drug problem D．It is a heroic activity to destroy all the drugs available