His mother worried that he spent too much time on the computer and not enough time . A. to st——青夏教育精英家教网—

摘要： His mother worried that he spent too much time on the computer and not enough time . A. to study B. study C. studied D. studying [解析]选D.spend time(in)doing sth. 为固定结构.表示“花费时间做某事 .

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His mother worried that he spent too much time on the computer and not enough time _______.

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His mother worried that he spent too much time on the computer and not enough time ________．

to study

study

studied

studying

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