What's the problem with using a trolley? When you use a trolley, you don't( )and the trolley is ( )that it courages you to buy more.
B.
get some money back or things for free.
C.
pass many things that are nice but that they don't really need.
D.
feel the weight of the things you buy
E.
to invite shoppers to come into the store
F.
add points to loyalty cards