单选题 The brave fireman had fought for days before they managed to ______ the forest fire.
【正确答案】 D
【答案解析】[解析] 动词词组辨析。put on“穿上；上演”；put up with“忍受；容忍”；put off“推迟；扔掉；阻止”；put out“熄灭；伸出”。根据句中fireman，the forest fire提供的信息可以判定，只有put out符合句意。故答案为D。