we should clean( )twice day A our tooth B our tooths C teeth D our teeth

We should keep our classroom _______(clean). We should clean our h[ ]before meals We should keep the nice room clean What should we do ____________(keep) our classroom clean We should keep our room clean 改被动语态 what should we do to keep water clean The first thing ( ) we should do isto clean the room. we should keep the water clean(改为一般疑问句） We should keep the water clean 的汉语意思是? we should help——(clean) the classroom The first thing ( ) we should do isto clean the room. we should keep the river clean.(一般疑问句） We should make the school ( )A.cleaning B.clean we should keep our ( )《river》and ( )《ocean》clean. we should Keep our classroom ---A.cleaned B.clean C.cleaning D.to clean说说原因 we should ask tom tou clean his room.tom ---to clean his room同义句 we should make the classroom___every day.A.cleaning B.to clean C.cleans D.clean We should keep the environment clean and tidy的同义句 The environment should ____　____　　clean andtidy by us.