Theywentswimmingtwiceamonthlastyear.(保持句意不变）They___________goswimmingtwiceamonthlastyear.
2022-01-28 60次 反馈错误 加入收藏 正确率 : 100%
题目内容：
They went swimming twice a month last year.(保持句意不变）
They _____ ______ go swimming twice a month last year.
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used to
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