完成句子。我们正盼望着暑假呢。We ________ ________ ________ ________the summer holiday.
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.