The speech about lenovoGood morning, good afternoon, good evening. Today, you and all our colleagues ar
中考英语知识点：常用“be 形容词 about”结构中考英语知识点：常用“be形容词about”结构beangryabout因某事而愤怒beanxiousabout担忧；为……而忧虑becarefulabout