On the first day of school, my sister put a piece of paper on my back(改为一把疑问句)

On the first day of school, my sister put a piece of paper on my back(改为一把疑问句)

题目

On the first day of school, my sister put a piece of paper on my back(改为一把疑问句)
______your sister _____ a piece of paper on my back

答案

Did my sister put a piece of paper on my back?

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