Question

It was __________ computer games that cost the young man a lot of precious time that he
should __________ on his lessons．

A．to play; be spending	B．playing; spend
C．played; have spent	D．playing; have spent

Answer 1

D

试题分析：考查动名词用法和情态动词用法。本题是一个强调句型，强调的是主语playing computer games。该动名词短语在句中做主语。第二空should have done本应该做某事实际上却没有做；句意：正是打电脑游戏花去了这个年轻人很多本应该用在学习上的宝贵时间。故D正确。
点评：强调句型的最大特点是把it is/was…that/who…去掉，句子仍然成立。本题强调的是动名词短语做的主语。动名词做主语，表示经常性，习惯性的行为。