单项选择题
A．At first B．First C．One D．At the beginning
A. Ifs impossible. B. I suggest we go to the seaside. C. I’d like to tell you something. D. How about going to the art exhibition E. I hope not. F. We’d better think of something else. G. I’m afraid. H. I’m very sorry to hear that.
A．have to pull of your clothes first B．should hurry to get him out of water as soon as possible C．should first make out who he is D．ought to throw a lifeboat to the person first