1677] You throw waste everywhere, or you be punished for that. [译文] 严禁乱丢废纸.否则要受处罚. A. needn’t; can’t B. mustn’t; may C. shouldn’t; need D. daren’t; can [答案及简析] B. mustn’t do sth. 严禁做-. 查看更多

 

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