问题
选择题
___ study in No.4 Middle School?
A．Did you used to
B．Did you use to
C．Do you used to
D．Do you use to
答案
答案：B
题目分析：句意：你过去在第四中学读书的吗？used to 的疑问句型为Did sb use to do sth.? 或Used sb to do sth?，故选B。
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