He---back until the work---done.A.isn't;will be B.won't be;will be C;won't be;is为啥选C不选A

He---back until the work---done.A.isn't;will be B.won't be;will be C;won't be;is为啥选C不选A
英语人气:479 ℃时间:2019-11-04 20:52:41
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He---back until the work---done.
A.isn't;will be B.won't be;will be C;won't be;is 为啥选C不选A
选项是C
因为【主将从现】.主句用【一般将来时】,从句用【一般现在时】.won't 是什么东西,是什么的缩写,还是过去式?won't 是will not的缩写.
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