My brother often takes the train --- school

My brother often takes the train --- school
A to Bat Cby Dof 选哪个?为什么,请详细阐明理由.
2 Travelling by ship is __________than taking a bus.
Aa lot of fun Bmuch fun Ca lot more fun Da lot much fun
3 It took us____to walk to the factory last Saturday.
Aone and a half hour Bone hour and a half hourCone hours and a half hour Done and a half hours