Close the windows before you leave the classroom.为何Close用原型,不用动名词?

Be ----to close the windows before you leave. Be sure to close the windows是不是祈使句?可不可以写为Being sure to close the windows Be s＿ to close the windows before you leave the classroom Did you close all the windows? close the windows,tom.改成否定句 There will be a strong wind_______ the south of the Yellow River.Let's close the windows.麻烦写下原因 Students__________ to close the windows before they leave the physics lab.A) tell B) will be told 连词成句our,will,and,holiday,be,exciting,fundid,you,was,close,when,windows,the,typhoon,the,coming Could you be so kind as to close the windows?用yes,please还是that is ok ---------(close)the windows before you leave the classrom. Before you leave the classroom,please r____to close the windows. Keep the windows ________(close).It's too cold today. Don’t forget _________(close) the windows after school. 连词成句windows,doors,close,and,the I____(close)the windows before I leave.动词填空 Don't f___ to close the windows after school,class Helen is busy _____ (close) the windows now. We must keep all the windows -----.A close B closed