问题描述：
______(当...时)you smile at it， it will smile back.最佳答案：
When you smile at it， it will smile back.
问题描述：
______(当...时)you smile at it， it will smile back.When you smile at it， it will smile back.
上一篇：What did you do at home last Saturday? I- my mum- dinner
下一篇：同学们，健康饮食很重要，写一写你的日常饮食。要求：语句通顺，书写清晰、规范。不少于8句话，