I am often ____(sleep)in class.为什么,涉及到的语法?

I am often和i am often I am often ____(sleep)in class.为什么,涉及到的语法? I often go to the English corner to have a free talk with my classmates ____ I am busy. ( )32.I often ____ the cleaning after school.Now I ____ the cleaning,too.A:do,doing B:( )32.I often ____ the cleaning after school.Now I ____ the cleaning,too.A:do,doing B:am doing,do C:do ,am doing D:am doing,am doing I am ____(踢) football. I am weak ____ English. I'm slee 中文是什么意思? Simon often ____ ,I am generous .I like to ____ nice presents to my friends when I go to Simon often ____ ,I am generous .I like to ____ nice presents to my friends when I go to visit themA.tells ; carry B.speaks ; bring C.says ; talk D.says ; ge I often ____(clean) the room. I often go ____(shop) on sundays. I am in ____,I am Row Five ) 4.I____have lunch at 12:30.But ____ it’s 12:00,I am having my lunch.选项：A usually; often B often; usually C sometimes; often D usually; now为什么？选D 我要周游世界.I am ____ ____ travel ____ ____ ____ ____.后四格怎么填? 我要周游世界.I am ____ ____ travel ____ ____ ____ ____.只要填后四格. I am ofem/I often和hearing/listening的区别? i am too tired ____(work) on I am ____(重）than you. I____Li Jia ____you bill?____,I am.