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最佳答案:keep your voice downkeep quiet
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最佳答案:Don't speak too loud. 这是不要太大声说话No speaking 就是不要说话(连小声说都不可以)
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最佳答案:We should take care not to talk loudly in the library.We have eaten (mopped) up
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最佳答案:The teacher told us not to speak loudly in the library