Do these student often sing the English song (被动语态）

Do these student often sing the English song (被动语态） Do these student often sing the English song?(被动语态） do you know these The student are busy___their lessons these days.(review) The student are t___ after doing these things. Student attend these schools from kindergarten t() eighth grade Do you know these people? do you like these trousers? How often do you do these things? what do these children usually do? These things do happen 为什么用do Do you know your student n______ what problems do college student face today “Do not show the other student”是什么意思 What do middle school student do after class iWhat do middle school student do after class in America? student You should do more of these. DO you have any shoes these?