British postmen have a reputation for being cheerful.Of course, there are some gloomy postmen,who make you think that every letter contains tragic news,but the majority are jolly and good-humored.(1)_______________________.Normally, the city postman has to go on foot,not only along streets but also up and down stairs,as many blocks of flats still have no lifts and no down-stairs letter box.If he has a registered letter to deliver,he has to wait for someone to come to the door to sign for it.That person may greet him in a most unfriendly way if he has just been woken from a deep sleep very early in the morning.In the country,a postman may have a bicycle or a small van,so he does not have to walk so far: nevertheless he has his problems too.(2)_______________________.In winter, the postmen often have to carry on in the rain or the snow.Sometimes it is on foot,like his city colleague.Most country people keep a dog.He is forced to go in whether the dog is dangerous or not.So every day the country postman knows that,(3)_____________________________________.