问题补充：
If you want to speak English well, it’s for you to practice as often as you can.
A. necessary
B. different
C. famous
D. serious
答案：
(答案→)A. necessary
B. different
C. famous
D. serious
解析：四个选项含义分别是必要的、不同的、著名的和严重的。根据题意，如果你想说好英语，尽可能的多练习对你来说是必要的，选A.
