(1) 我刚刚做了这个太空站的模型.
I ________ just ________ _________ _________ of the space station.
(2) 你听说了最新的消息了吗?
_________ you _________ _________ ___________ news?
(3) 一些科学家已发送了一艘宇宙飞船去火星.
Some scientists ________ _________ a spacecraft ________ Mars.
(4) 到那儿花了几个月的时间.
It ________ _________ _________ __________ to get there.
