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初三英语He spent as much time playing as he——— a.studies b.studing c.did studing句子成分分析

题目详情
初三英语He spent as much time playing as he——— a.studies b.studing c.did studing
句子成分分析
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答案和解析
C ====he spent time studying 因为SPENT是过去时,所以就用它的助动词DID来表示.SPEND TIME 后面的动词用ING形式.