david： susan, you like sports, don’t you?
susan： yes. i have sports every afternoon.
david： do you often go swimming?
susan： yes, i go swimming once a week.
david： i used to swim at middle school, but i don’t have time any more.
susan： that’s too bad! exercise is very important.
david： i know. i am getting fat, you see. anyway, i don’t want to be heavy.
susan： well, i’m going to swim this afternoon. do you want to go with me?
david： ok! i really need more exercises. when and where shall we meet?
susan： how about three o’clock, at the swimming-pool?
david： all right. good-bye!
susan： good-bye!
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