孩子们用粉笔在人行道上画了一幅漂亮的画。
The children drew a beautiful picture on the sidewalk with ___chalk.
体操运动员在比赛前会在手上抹些防滑粉。
The gymnast applied some ___chalk to her hands before the competition.
孩子们用粉笔在人行道上画了一个跳房子方格。
The children ___chalked a hopscotch grid on the sidewalk.
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