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根据上下文和所给的首字母提示写出所缺的单词，使短文内容完整、连贯。
A man walked i_______a doctor’s examining room．“Put out your tongue．”the doctor said．
“OK．There is nothing s_______，”the doctor said．“It’s clear what’s wrong with you．You need more exercise．”“But，doctor，”the man said，“I don’t think…”
“Don’t tell me what you think，”the doctor said．“I am the doctor，not you．I know what you need．I see hundreds of people like you．N_____of them get any exercise．They sit in the office all day and in f_______of the television in the evening．What you need is to walk quickly at l_______twenty minutes a day．”
“Doctor，you don’t understand，”the man said．“I…”
“There is no e________．”the doctor said．“You must find time for exercise．If you don’t，you will get fat and have health problems when you are old．”
“But I walk every day，”the man said．
“Oh，yes，and I know what kind of walking that is．You walk a few meters to the office from your house，and a few more meters to a r_______for lunch and back．”
“Please listen to me，doctor!”the man s_______at the doctor angrily．“I’m a mailman，”the man w________on，“I walk for seven hours every day．”
For a moment the doctor was silent，and then he said quietly，“Put your tongue out a_______，will you?”
1．________ 2．________ 3．________ 4．________ 5．________ 6．________ 7．________ 8．________ 9．________ 10．________