It was____computer games that cost the boy a lot of time tha

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It was____computer games that cost the boy a lot of time that he ought to ha
It was＿＿＿＿computer games that cost the boy a lot of time that he ought to have spent on his lessons.
A.to have played B.playing C.played D.having played
这里为什么

选B
这句话的意思是：这个男孩把好多应该花在学习上的时间花在了玩电脑上.
这是一个强调句型,缺少的是一个名词性短语,所以要填分词playing
C肯定不对,而A和D都是用的完成时,一般用完成时我们都更多强调动作发生时间的顺序,这个句子里强调的是玩电脑这件事,而并不是时间顺序.并且,不定式的完成时或现在分词完成时,更多用在状语,很少用于主语.

It was____computer games that cost the boy a lot of time tha 1.It was______computer games that cost the boy a lot of time it was playing computer games that cost the boy plenty of ti It will cost a lot of time .At the same time,I think we shal It will cost a lot of time.______,I think we shall need it a even at the time,I knew that it didn't make a whole a lot of _the cost,the project will take a lot of time as well.A apar it often ___ me a lot of time ___ play computer games Of all the clothes,the red skirt is ______.It cost me a lot Playing computer games too much ( )wasting a lot of time. i have a lot of my time on computer games. Playing computer games wastes a lot of time.