William the Conqueror built at least 90 castles for ().

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

William the Conqueror built at least 90 castles for ( ). A: a kind of protection B: swimming C: good looking D: visiting

它是世界上最大的古代城堡之一 A: It’s one of the largest ancient castles in the world. B: The city has many amazing old buildings. C: It is often crowded with both locals and tourists.