Most popular race: London marathon breaks records 最火赛事：伦敦马拉松连破纪录
How exercise could boost your exam grades 为什么运动能助你的考试成绩 “一臂之力”
Like a moth to a flame 如飞蛾扑火，难抵致命诱惑
语法辨析：连词、过渡词和连接词
Saving gorillas by helping humans 通过帮助人类来拯救大猩猩
四个包含单词 “deal” 的短语
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