He spent two hours ()(do)his homework.答案是doing. 而我写了did.为什么不是did呢?不是已经做了作业再说的吗,那就用过去式啊.我想不通诶,Help me!

He spent two hours mending his bike .(改为同义句) He spent two hours reading the book(改为同义句)_____ _____him two hours____ ____the book He spent two hours doing his homework last night把句子改成同义句 He spent two hours to finish his homework.哪里错了 he spent two hours 什么 the game show last night .【watch】 He spent two hours finishing doing the hard work(two hours 画线)____ ____ ____he spend finishing doing the hard work The boy spent two hours on the work.If he’s given _____ two hours ,he can finish all the work..The boy spent two hours on the work.If he’s given _____ two hours ,he can finish all the work.A.otherB.the otherC.another D.others这题选什么?为 He spent two hours in cleaning his bed room yesterday.→He spent two hours in cleaning his bed room yesterday.变同义句.It_____ _____two hours_____ _____his bedroom yesterday“____”中为什么填took,me,to,clean? Jim likes playing soccer a lot,and he （ ）about two hours playing soccer every dayA.spent B.spends C.has spent D.will spend He sleep about two hours She spent two hours walking there同意句 为什么 Maria spent two hours (doing) the work 填doing I spent two hours doing my homework yesterday什么意思 I spent two hours ____(finish) my homework yesterday. I spent two hours on my homework.同义句 Alan spent two hours ( )(do one's homework)last night. I spent two hours cleaning my room 改为同义句 they spent two hours ____(watch)the players____(play) football