1.I live on the fourth floor.Tom lives on the sixth floor.I

1.I live on the fourth floor.Tom lives on the sixth floor.I live two floors ______Tom.
A.above B.over C.below D.under
2.When the car stops,a boy with short hair _____ it and runs into the school.
A.gets out of B.gets on C.gets off D.gets into
3.You mustn't eat anything _______ you see the doctor.
A.because B.if C.when D.Until