问题补充:
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:
A. Did you used to
(答案→)B. Did you use to
C. Do you used to
D. Do you use to
解析: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。