根据汉语意思完成下列句子,每空一词。(5分)布朗是他的姓氏。Brown is his ____ ____.那是一张地图吗?Is that ____ ____?它们是五辆公共汽车。They are ____ ____.让我帮帮你吧。Let ____ ____ you..给你。____ ____ are.