We offer a ____________ to customers who buy in bulk.
A. refund
B. discount
C. delivery
In order to get a full ________, customers must send back goods in the original packaging.
A. discount
B. refund
C. return
在现代汉语中,()和()是表达语法意义的主要手段。
Goods will be __________ within 24 hours of your order.
A. despatched
B. purchased
C. exchanged