问英语题……五四制初三……是一道完形填空,说的是宇航员什么的……befor f____into space, they had lots of p_____. Each upside-down training l____for many days. They also have to know every part of the spaceship and how it
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问英语题……五四制初三……是一道完形填空,说的是宇航员什么的……befor f____into space, they had lots of p_____. Each upside-down training l____for many days. They also have to know every part of the spaceship and how it
问英语题……五四制初三……是一道完形填空,说的是宇航员什么的……
befor f____into space, they had lots of p_____. Each upside-down training l____for many days. They also have to know every part of the spaceship and how it w_____
问英语题……五四制初三……是一道完形填空,说的是宇航员什么的……befor f____into space, they had lots of p_____. Each upside-down training l____for many days. They also have to know every part of the spaceship and how it
flying（flying into space飞入太空）
practice
lasts持续（不能用过去时,因为他们还没进入太空,训练还在继续,用一般现在时才好,而且是第三人称单数）
works（它是怎么工作的）
flying（flying into space飞入太空）
practice 训练(不可名)
lasted 持续
works（how it works 太空船的工作原理）
flying （fly into 飞入）
practice （do practice 练习）
lasted for 持续
works （how it works 如何运行）