题目内容
Sam spends two hours _______ his homework every day.
A.to do | B.doing | C.do | D.does |
B
试题分析:句意: Sam每天花两个小时的时间做家庭作业。spends sth( in) doing sth花费时间在做某事上,in可以省略。故选B。
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题目内容
A.to do | B.doing | C.do | D.does |