—What would I do if I can't sleep before a big exam?          

—You'd better            a long walk before going to bed.               [ ]

A. take              

B. taking                

C. to take

火车零担货物运输是指托运人向铁路托运一批货物的重量、体积或形状不需要以______运输的货物，即托运货物可与其他托运货物______。