完形填空 阅读下列短文,从每小题所给的A、B、C、D四个选项中选出一个最佳选项。 Lisa is serious about the chores in her house, She gives her children thiings that they ___16___ do according to their ages. She started by asking John, the ___17___ of her two sons, to help with the dishes, It is now an easy chore ___18___ the 15-year-old. His 13-year-old brother, Dave, now ___19___ John too. They take turns(轮流)was hing the ___20___ each week. The boys also clean their study tables, make their beds and ___21___ food from the market on Sunday mornings. Besides(除了)these, the boys also know how to cook easy meals ____22____ their parents are not at home. The family of ____23___ live in a big house but they do all the housework themselves. Lisa says, "When I was young, my father wanted us to do things on our own and learn how to ___24___ ourselves. Now I'm doing it to my kids." John says, "Doing chores is ___25___. You can learn important life skills and responsibility(责任)." 16.A.must B.can C.may D.will 17.A.elder B.taller C.younger D.shorter 18.A.with B.as C.for D.by 19.A.likes B.finds C.hates D.helps 20.A.hands B.dishes C.fruit D.clothes 21.A.borrow B.cook C.buy D.sell 22.A.when B.how C.what D.why 23.A.two B.three C.four D.five 24.A.work on B.live in C.look at D.take care of 25.A.difficult B.good C.bad D.boring