they are a____ busy with their lesson on weekdays

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• they are a____ busy with their lesson on weekdays
• 一道英语选词填空 They are busy _____(go going) over the lesson
• A____,I'm busy at the moment —Can I phone you back?____里填什么?
• my mother leavesa n____ on the door to tell me the breakfast is on the table .after the class f____,we go home.i am s____you like some subjects.jack usually runs a____with his friends after class.he is r____busy today.the childten all like having physical e____.beijing is one of the oldest c____in china.are there a____ picture on the wall?_____peter have a ruler?____(be)she your english teacher?
• ________you often busy on weekdays last year ?No,I _______.But I ____ often very busy now.
• I am very busy at the a____, so may I call you back after the work? 怎么填空
• ________you often busy on weekdays last year No,I _______.But I ____ often very busy now.
• 初一英语大课堂.I feel s___ for him.And i don't know why he is a____ so busy.
• 英语翻译I am very busy on Friday.At 8:00 I have math.It is not fun.The teacher says it is useful,but I think it is difficult.Then at 9:00 I have science.It is difficult but interesting.At 10:00 I have history.After that,I have P.E.at 11:00.It’s easy and fun.Lunch is from 12:00 to 1:00,and after that we have Chinese.It is my favorite subject.Our Chinese teacher,Mr.Wang,is great fun.My classes finish at 1:50,but after that I have an art lesson for two hours
• the boy is busy tomorrow’s lesson
• 设函数f(x)=3x2-1,则f(a)-f(-a)的值是
• 已知抛物线y=-x2-2x+3与x轴交于A、B两点（点A在点B的左侧），与y轴交于点C，抛物线的顶点为M连接AM、AC、BC，试比较∠MAB和∠ACB的大小，并说明理由．