问题
选择题
Prices of daily goods ___________ through a computer can be lower than store prices.
A．are bought
B．bought
C．been bought
D．buying
答案
B
题目分析：句意：通过电脑买的日常商品的价格要比在商店买的价格低。这里需要非谓语动词做定语修饰goods，因为goods和buy是被动关系，用过去分词做定语，所以选B。