When someone asks me what business I am in. My face feels hot. I envy (嫉妒) people who can say that they are writers, bookkeepers and doctors. All these jobs speak for themselves. I really do make a living by __21__, and a good one, too. I can laugh like a king or like a schoolboy. It is a skill that I have learned, like the skill of mending shoes. Whenever and however laughter is needed - I am asked to do __22__. I laugh like a bus driver or a shopkeeper. I laugh sadly, kindly and happily. I need __23__ point out that a job of this kind is tiring. I spend most evenings in nightclubs. My job is to laugh during the weaker part of the show. My loud, hearty laugher must be timed carefully. It must not come too soon, __24__ neither must it be too late. I go through life quietly. I can copy the laughter of others. I can laugh in many different ways. But I'm not sure that I have ever heard the sound of __25__ own laugh. 21)、 A.hardly B.my C.but D.it E.laughing 22)、 A.hardly B.my C.but D.it E.laughing 23)、 A.hardly B.my C.but D.it E.laughing 24)、 A.hardly B.my C.but D.it E.laughing 25)、 A.hardly B.my C.but D.it E.laughing