填空题

what’ s the second step to teach a child to swim At the second step, the child is taught to ______.

【参考答案】

float

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(show) ______ the ID. card, the students were allowed to enter the exam-room one by one.

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what’ s the second step to teach a child to swim At the second step, the child is taught to ______. 您的浏览器不支持 audio 元素。