题目内容
12.The police must be able toreact(反应) quickly in an emergency.分析 警察在紧急情况之下必须能够反应迅速.
解答 react react 是一个动词,意为"反应,作出反应"的时候是不及物动词. be able to 意为"能够",后面加动词原形.
点评 考查动词的词义.要熟知单词的词义和词性,写动词时应注意其人称时态的变化.
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