完形填空。 We always want what we cannot have.When we're young,we want to stay out late,have romantic relationships,and be__ 1 __.However,when we're__ 2 __,we want to go back to being young and we__ 3 __the days when we didn't have to worry about complex love affairs,__ 4 __ pressure,and money problems. Young pe ople believe adulthood__ 5 __freedom from parents and schoolwork.When they get older,they feel that_ _ 6 __is freedom from work pressure and family responsibilities.To__ 7 __ this feeling,people say,'The grass is always__ 8 __on the other side of the fence.' As__ 9 __,we like to be like adults but as young adults,we__ 10 __to be young again.We think about staying out late and__ 11 __our own money to spend.Suddenly,they see that love can result in__ 12 __hearts；staying out late makes it hard to get ready for__ 13 __the next morning.They find out that adult life is not as__ 14 __as they thought it would be and suddenly,__ 15 __becomes very scary. Life is__ 16 __.It gives us time to__ 17 __but also requires us to work.The time will come when we must grow up and we will always look back wishing we__ 18 __being young a bit longer.That time will not come back.It is normal to want what we cannot have but the__ 19 __is that to be happy is to appreciate what we have.That is the first step to grow up.__ 20 __life becomes more complex, we will not regret the time we wasted wishing we were adults. (     )1.Acomfortable (     )2.A.older (     )3.A.like (     )4.A.study (     )5.A.creates (     )6.Achildhood (     )7.A.reduce (     )8.A.greener (     )9.A.researchers (     )10.A.wish (     )11.A.making (     )12.A.healthy (     )13.A.breakfast (     )14.A.rich (     )15.A.life (     )16.A.long (     )17.A.study (     )18.A.stopped (     )19.A.reason (     )20.A.If B．dependent B．defeated B．forget B．job B．shows B．adulthood B．describe B．thinner B．teenagers B．decide B．having B．ambitious B．school B．busy B．love B．shor B．thin B．enjoyed B．result B．When C.   indepent C．married C．regret C．age C．means C．parenthood C．experience C．yellow C．adults C．return C．worrying about C．broken C.   exercise C．free C．career C．fair C．play C．imagined C．dream C．Unless D.   polite D．confident D．miss D．health D．limits D．romanticism D．understand D．colorful D．elders D．stop D．showing off D．excited D．work D．easy D．future D．beautiful D．live D．tried D．truth D．Before