Question

It was playing computer games_______ cost the boy plenty of time______ he ought to have spent doing his homework.    

A．that; that

B．which; that

C．which; when

D．that; when

Answer 1

A

这题考查强调句，强调的是playing computer games，第二空考查定语从句，先行词是plenty of time，定语从句中缺乏宾语用that引导句意是：就是玩电脑游戏花了男孩本来应该花来写作业的时间。选A。