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】______.1 knew 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】

A．happy

B．worried

C．curious

D．surprised