问题补充：
tennis every day ?
A. Did you used to playing
B. Did you use to play
C. Use you to play
D. Used you play
答案：
A. Did you used to playing
(答案→)B. Did you use to play
C. Use you to play
D. Used you play
解析：“used to +动词原形”表示过去经常做某事。在疑问句中多用“Did +主语 + to …”。其否定式是“didn\t use to …”或“use(d)n\t to …”
