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中小学英语习题：时态(一)
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I will tell him as soon as he ____ back.【单选】
Well go to play with snow if it ____ tomorrow.【单选】
二、根据句意，用所给词汇的正确形式填空
It’s polite to stand in ____(line).
He is always ____(nervously) when he meets a teacher on the way.
