题目内容
4.They often have lunch at 12:00.分析 他们常常在12点吃饭.
解答 答案:at.
根据"12:00"以及首字母提示a,在具体的某个时间点要用介词at,故填at.
点评 首先要掌握句子的意思,然后结合具体的题目,就可以确定正确答案.
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