---Students should devote most of their time to studying rather than playing computer game

问题补充：

---Students should devote most of their time to studying rather than playing computer games.

---.No pains, no gains.

A. Extremely

B. Actually

C. Obviously

D. Exactly

答案：

A. Extremely

B. Actually

C. Obviously

(答案→)D. Exactly

解析：

试题分析:考查副词辨析。A非常地；B实际上；C明显地；D确切地。根据No pains, no gains.可以判断说话人赞同对方的话，所以答案选D。句意：---学生们应该把大多数时间用在学习上，而不是用在玩电脑游戏上。---完全正确。俗语说的好：不劳不获。