【题目】Since she has been out of contact for two days, the family are all (concern) about her safety.
在线课程【答案】concerned
【解析】concerned；考查形容词。be concerned about“关心，担忧”，固定搭配。
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Since she has been out of contact for two days, the family are all about her safety.
编辑：chaxungu时间：2026-04-27 03:11:00分类：高中英语题库
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