单选题 Most of the big hotels were full, but ______, we were able to find a room in one of the those small guesthouse near the station.

【正确答案】 C

【答案解析】[解析] unfortunately“不幸地”，suddenly“突然地”，luckily“幸运地”，certainly“当然”。句意为“大部分大型旅店都住满了，但幸好我们在车站附近的小旅店找到了一个房间”。故选C。