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The astrorauts found that ( )the spaceship went further and further into space,
it become more and more difficult to control its own movements.
A.If B,till C,as D,while
人气:137 ℃ 时间:2020-01-27 19:46:16
解答
选“C”,“as”表示随着一种状态加深所发生的情况.
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