来自小晴儿的问题
过去分词应表示被动和完成,可本句的主语是人,应表示主动啊,所以我觉得A不对
_____about his own safety,Peter put a card on the back of his car reading"Caution---Newly Licensed."A Concerned B Concerning C Having concerned D Being concerned
1回答
2016-05-25 08:57