The Eiffel Tower for the 1889 Paris Expo. It is a symbol of the city now.
A. built
B. was built
C. has built
D. was building
网友回答
A. built
(答案→)B. was built
C. has built
D. was building
解析：考查时态及语态。句意：埃菲尔铁塔是为1889年巴黎世博会建造的。它现在是这个城市的象征。根据时间1889，又是被建，所以应用一般过去式的被动语态。选B。