题目

They ______ a tent and got ready for the night when evening came A. put off      B. put up        C. put on          D. put out   答案： B   考查动词短语的含义。句意：夜幕降临时他们支起帐篷准备过夜。根据句意选B。此处put up意为：支起，搭起。put off推迟； put on穿上；put out扑灭。  

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