A．Riding bicycles for a long distance．
B．Walking vigorously with arm weights．
C．Weight lifting．
D．Arm stretching．

A．when they spend less time in a drugstore
B．when they have very little time in a department store
C．when they have a lot of time in a drugstore
D．when they spend very little time in any stores

A．She often goes in a drugstore just looking around．
B．She prefers making purchase in a department store．
C．She will buy something every time in a store．
D．She sometimes talks herself out of buying something in a store．