It took mary two weeks to prepare for the exam(改为同义句）Mary____two weeks_____ _____for the exam
问题描述：
It took mary two weeks to prepare for the exam(改为同义句）Mary____two weeks_____ _____for the exam
答
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 math...