A.get	E. medicine	I. only
B. called	F. over	J. use
C. similar	G. average	K. usually
D.think	H. valuable	L. development

Most riders had to ( )

• A、only ten days

• B、for a better life

• C、a couple of months

• D、be young and brave

• E、switch horses and riders

• F、after the outbreak of the Civil War

There were adequate stations to ( )

• A、only ten days

• B、for a better life

• C、a couple of months

• D、be young and brave

• E、switch horses and riders

• F、after the outbreak of the Civil War