Three quarters of some children’s spare time wasted watching TV-that can explain
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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./
试题答案
B
解析：句意：一些孩子的业余时间有四分之三浪费在看电视上——这也是他们懒惰的原因。分数作主语，谓语要与后面的名词spare time在数上保持一致。