用be supposed to do sth句型造十个句子

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用be supposed to do sth句型造十个句子

Are we supposed to discuss the questions ,too?我们也要讨论所给的问题吗?Vitamin C is supposed to prevent colds.维生素C可以预防感冒.Cats are supposed to have nine lives.猫被认为有九条命.He is supposed t...