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英语
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The robot b______ to work ay once.
人气:408 ℃ 时间:2020-02-06 00:10:42
解答
The robot began____ to work at once【过去式】
The robot begins______ to work ay once【一般现在时第三人称单数要加s】
因为不知道语境,两种填法都可以.
希望对您有所帮助`~
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