问题补充:
You play computer games for a long time. It’s bad for your eyes.
A. should
B. shouldn’t
C. could
D. don’t have to
答案:
A. should
(答案→)B. shouldn’t
C. could
D. don’t have to
解析:考查情态动词。Should 应该,shouldn’t 不应该,could 能,会don’t have to 没有必要,句意:你不应该长时间玩电脑游戏,对你的眼睛不好。所以选B。