当前位置:在线题库搜索>[单选题]During the tourist season, there are many people wandering in this city to see the old castles () in the sixteenth century. 选项的答案是什么?

问题:

[单选题]During the tourist season, there are many people wandering in this city to see the old castles () in the sixteenth century. 选项

A、to be built
B、being built
C、having been built
D、built

参考答案: D