单项选择题

案例分析题

After graduation from high school，I started to sell.Soon I discovered that the【C1】______expression I had been wearing since childhood meant sure【C2】______.1knew it wasnt going to be easy to【C3】______that expression on my face left by so many years of hardship.It【C4】______a complete change in my view on life.Here is the【C5】______I tried.Each morning during a fifteen-minute bath，I【C6】______to cultivate（培养）a big，happy smile.I found out，【C7】______，that it couldnt be a forced smile【C8】______just for the purpose of putting dollars in my【C9】______.It had to be an honest-to-godness smile from down deep【C10】______，an outward expression of happiness from within !Lets see【C11】______starting off with a good fifteen-minute workout of the smile muscles【C12】______me during the day.Before entering an office I【C13】______think of the many things I had to be【C14】______for，work up a big smile and then enter.Seldom did it fail to get the same smile【C15】______from the person I met.I also found that it【C16】______people when I passed them on the street to give them a【C17】______smile.Give every living soul you meet the best smile you have【C18】______smiled in your life，and see how much better you【C19】______and look.Its one of the best ways I know to【C20】______worrying，and start living.When I began doing this，I found I became more welcome everywhere.

【C1】（）

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