题目
情境交际填空。Mary发现她的同桌Anna的英语口语进步很快。上周五课间,Mary想请教Anna练习口语的学习方法,她应该这样问:A. What do you improve your spoken English? B. Why do you improve your spoken English? C. How do you improve your spoken English? D. When do you improve your spoken English? 请选出正确选项,并将该特殊疑问句抄写在横线上:________