用情态动词can,may,must或他们的适当形式填空

用情态动词can,may,must或他们的适当形式填空1.My father______ride a bike,but he______drive a car.2.You are ill,Tom.You________see the doctor.3.Children______play football in the street.4.If you are not careful,a car_______hit you.5.-______I come in?-Come in,please6.A blind man_______see anything.7.Please ask the policeman.He_______know the way to the hospital.8.-May I use your telephone?-No,you_______9.-______you help me?-sure!