It took mary two weeks to prepare for the exam(改为同义句)Mary____two weeks_____ _____for the exam

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It took mary two weeks to prepare for the exam(改为同义句)Mary____two weeks_____ _____for the exam
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It took mary two weeks to prepare for the exam(改为同义句)Mary____two weeks_____ _____for the exam
It took mary two weeks to prepare for the exam(改为同义句)Mary____two weeks_____ _____for the exam

It took mary two weeks to prepare for the exam(改为同义句)Mary____two weeks_____ _____for the exam
Mary spent two weeks in preparing for the exam.玛丽花费了2周时间来准备考试.spend的主语必须是人,常用于以下结构:(1) spend time /money on sth.在……上花费时间(金钱).例:I spent two hours on this maths problem.这道数学题花了我两个小时.(2) spend time /money (in) doing sth.花费时间(金钱)做某事.例:They spent two years (in) building this bridge.造这座桥花了他们两年时间.(3)spend money for sth.花钱买…….例:His money was spent for books.他的钱用来买书了.