7.聽材料,回答第17-20小題 17.What does the father do? A.A teacher. B.A farmer. C.A worker. 18.What does the father look like? A.He is tall. B.He is tall and thin. C.He is short and fat. 19.What does the father like doing? A.Fishing. B.Doing sports. C.Shopping 20.Who does the father often do exercise with? A.His friends B.His old classmates C.His family.