Since we can't hear you at the back of the hall, you will have t____your voice. ( 章节：1 难度：3)
- A、lift
- B、increase
- C、raise
- D、speak up
正确答案:C
答案解析:有
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Since we can't hear you at the back of the hall, you will have t____your voice. ( 章节：1 难度：3)
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