no students do homework once or twice a week中student为什么加s

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• 问几道初二的英语题和物理题?英语：1.The students exercise once or twice a week(对画线部分提问)画线部分为once or twice2.I finished my homework.Then I went to bed.(合并为一句话)3.I hope I can improve my English soon.(改为同义句)物理：1.在交通运输中还常用＿＿做速度的单位．2.爬行速度只有2.5cm/s的乌龟和兔子赛跑,总赛程为360m．比赛开始后,兔子先以11m/s的速度一口气跑到离终点处只有30m的地方,然后开始睡觉.当它一觉睡醒时恰好看见乌龟在爬过终点.问兔子停下时乌龟离终点还有多远?兔子从停止奔跑到睡醒耽误了约多少时间?假设兔子醒来后既以7.5m/s的速度跑完了全程,那么,兔子要在这次比赛中取胜,至少要在乌龟离终点还有多远时醒来并立即追赶?3.甲乙两车同时从同一地点A出发,沿直线同向到达B点,甲车在前一半时间的速度为V,后一半时间的速度为2V.而乙
• no students do homework once or twice a week中student为什么加s
• no students do homework once or twice a week中student为什么加s
• 句型转换,Exercising is good for your health.(改成同义句）It's_______for you_______ __________.My father goes to xining four times a year.(对划线部分提问）_______ __________ ______________your father _________to xining?Mike always watches TV On school nights.(变为否定句）Mike _____ ____________ TV on school nights.HOw ,hours,do,many,every,you,night,sleep（连词成句）._______________________________________?DO,Don‘t homework,twice ,a,once,week,or,students(连词成句）_______________________
• 英语翻译Here are the results of the student activity at green high school.Most students exercise three or four times a week.Some students exerciseonce or twice a week .Some students are very active,and exercise every day.As for homework ,Most students do homework every day .some stdents do homework three or four times a week .No students do homework once or twice a week .The results for "watch Tv"are interesting .Some students watch Tv once or twice week,
• what do student do at green high school这篇文章的知识点 Here are the results of the student activity survey at Green High School.Most students exercise three or four times a week.Some student exeercise are very active and exercise every day.As for homework,most students do homework every day.Some students do homework threeor four times a week.No students do homework once or twice a week.The results for"watch TV"are interesting.Some student watch TV once or tw
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• What comes twice a moment ,once a minute and never in a hundred years?