Mary spent two hours ______ the math problem.[ 1分]A.tried to solveB.to try solvingC.for trying to solveD.trying to solve

Mary spent two hours ______ the math problem.[ 1分]A.tried to solveB.to try solvingC.for trying to solveD.trying to solve 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. He spent two hours mending his bike .(改为同义句) I spent two hours cleaning my room 改为同义句 they spent two hours ____(watch)the players____(play) football I spent two hours in___(finish)this task I spent two hours making the cake.(同义句转换) I spent two hours with my homework.这句话对吗 What I spent almost two hours here for? 对划线部分提问、 They spent two hours painting the room.其中two hours 划线、 The time spent was only two hours.spent的语法现象The time spent was only two hours.其中spent后置修饰time,这是什么语法现象? ( I spent two hours ______ my report.I spent two hours ______ my report.A.to writeB.writtenC.writingD.write I spent two hours on my homework一句中spend为什么要用过去式spent