问题补充:
—Susan ,you are doing worse. You have to more your study than computer games.
—Yes. I must control myself.
A. concentrate;on
B. decide;on
C. take;on
D. spend;on
答案:
A. concentrate;on
B. decide;on
C. take;on
(答案→)D. spend;on
解析:句意:苏珊,你做的更糟。你必须花更多的时间于你的学习而不是电脑游戏。是的。我必须控制我自己。concentrate on 意思是集中精力于, 可直接接名词concentrate on sth 或接动词ing concentrate on doing sth 或 concentrate ones effort on sth/doing sth ;decide on sth下定决心做某事。decide to do sth决定做某事;take带走,拿走;spend花费,度过。所以选D。