Question

4. It was      cost the boy a lot of time that he ought to have spent on his lessons. (play)

正是玩电脑游戏花费了那个男孩大量本该用于学习的时间。

Answer 1

4. playing the computer games that考查强调句型的用法。从汉语提示的语气和英语残句的句首结构可以判断该句的整体结构是it is / was +被强调部分+that-从句。