Do you often spend half an hour _____（clean)the classroom af

Do you often spend half an hour _____（clean)the classroom af spend加什么动词ing?为什么 do you often spend half an hour （ on ） you You have only half an hour to spend it.Do you understand?--O I often spend half an hour an hour _____to school.A.walkB.wa In the morning,I often spend an hour practicing _____(read)E The school is _____ A.half an hour B.half an hour's how do you clean the classroom 英语翻译翻译1.I often spend half an hour （ ）to school.2.my sister How often do you clean your classroom?什么意思 Could you tell me _____- Certanily.In half an hour. do you think the work will be finished in half an hour?中为什么要 The student is made _____ there for half an hour.