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英语
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英语:How many times has the doctor been to England?---he ____ there twice
填空并说明理由
人气:414 ℃ 时间:2019-10-17 04:26:14
解答
空格内填has been
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用所给单词适当形式填A:How many times()the doctor()(be)to America?B:He()(be)there three times.
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