根据汉语意思完成下列句子,每空一词。(共5小题,每题1分,共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.
我们必须及时上交作业.
We must our homework in time.
我们不敢相信武汉的火神山和雷神山医院不到15天就建成了.
We can't believe that Huoshenshan Hospital and Leishenshan Hospital in Wuhan ______ within just 15 days.
与过去的定位系统相比,北斗定位系统更精准更强大.
the positioning systems in the past, Beidou positioning system is more accurate and powerful.
当我看到这张相片的时候,就忍不住想起我的老朋友.
I of my old friends when I see this photo.
中国人口占全世界人口的五分之一.
The population of China is of the world's population.