问题补充：
The boy is working harder than ever, hoping to the time he has wasted playing online games.
A. take up
B. make up
C. bring up
D. call up
答案：
A. take up
(答案→)B. make up
C. bring up
D. call up
解析：词义辨析。take up占据；make up弥补；bring up抚养长大；call up
唤起，给。。。打电话。句意：这个男孩比以前努力了，希望能把以前浪费在游戏上的时间弥补回来。所以选B.
