Catherine bought a postcard of the place she was visiting, addressed ______ to ______ and then posted it at the nearby post office.
 
【正确答案】 B
【答案解析】 address sth. to sb.为固定结构,意为“把……寄给某人”。此处指凯瑟琳把明信片寄给自己,因此第一个空填it指代a postcard of the place,第二个空填herself,故选B。