she spent two hours ( ) the work 为什么括号里的要填finishing呐?

she spent two hours ( ) the work 为什么括号里的要填finishing呐? 为什么 Maria spent two hours (doing) the work 填doing they spent two hours finishing all the work.(改为同义句) They spent two hours finishing all the work.改成同义句 I spent half an hour finishing ___ work.这里要填the吗?为什么? she spent two days finishing reading the book.的同意句? he spent three days finishing the work The boy spent two hours on the work.If he’s given _____ two took two hundred people finishing the work.finish不是要用原型的吗?为什 He spent the ___(remain) time finishing his paper.填什么,为什么这么填 改同义句:it took her two hours to do the work.She()two hours()th We spent a week finishing the work.(a week,提问)