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,please
6.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!