阿摩線上測驗
題組內容
【請依照句子前後文意，寫出最適當且完整的英文字彙，每格限填一個字】
16. It is suggested that everyone should take exercise at _________ three times a week. 根據建議，每個人應該一個禮拜至少運動三次。
詳解 (共 2 筆)
詳解
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詳解
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