题目内容

---______ must I take this medicine every day?
---Three times a day．

B
就表示频率的词提问用how often; how long就多长时间提问；how far就路程提问；在一般将来时里，就一段时间提问用how soon．

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口语应用。（15分）

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---______ must I take this medicine every day?---Three times a day．