题目内容

21、 By the time the firefighters arrived, the fire had been_____ by the people in the neighborhood.

    A. put off       B. put out      C. put down     D. put away

试题答案

21、B   

解析：put out“扑灭，出版”；put off“推迟”；put down“写下，记下”；put away“收拾”。