Three quarters of some children’s spare time wasted watching TV －that can explain why they are lazy.
A. are
B. is
C. being
D. /
网友回答
A. are
(答案→)B. is
C. being
D. /
解析：考查主谓一致：主语是分数，百分数修饰的时候，谓语要和后面的名词决定，这句话的主语是Three quarters of some children’s spare time，可知谓语是单数，句意：一些孩子的空闲时间被浪费来看电视—这可以解释他们为什么懒惰的原因。选B。