解释keep to 和a waste of time 和be short of 并分别造句

解释keep to 和a waste of time 和be short of 并分别造句 If we keep on__so much paper,there will not be any trees left on the Earth.A.waste B.to waste C.wasted D.wasting原因 Don't throw waste paper everywhere.It's our duty to keep our school_____ A.clean B.cleaing we must do everything we can （ ） waste water from running into the rivers.A.keep B.kept C.to keep D.keeping要说明理由， be waste of 和be a waste of区别be waste of有吗 be waste of 和be a waste of区别be waste of有吗 Waste paper shouldn't ____ enerywhere.It's our duty to keep our city clean.A.be thrown B.thronw C.is thrown D.are thrown Waste time to do /doing?需要字典上的解释 Waste paper should be throun every were,It's our duty to keep our city clean i will waste your life to keep my promise麻烦翻译 (1)He s___ that we should take exercise every day to keep fit.(2)That room is a m___ with waste...(1)He s___ that we should take exercise every day to keep fit.(2)That room is a m___ with waste paper on the floor and fast food boxes under the bed.(3) 解释haven't 和don't i hanvn't enough to waste time talking to you I don't have enough to wasta time talking to you keep a secret to somebody和keep a secret for somebody这俩有啥区别啊,翻译呢? waste time to do sth和waste time doing sth的区别? What ___ time it is to listen to a speech having nothing to do with you.需详解 A waste B wastesC a waste of D waste for What ___ time it is to listen to a speech having nothing to do with youA waste B wastesC a waste of D waste for always keep the faight和hope to the end 怎么翻译 （求仙后解释） ------Dear,why not __money bu yourself for your 8th birthday present?-------Good idea.I'll not let a penny go to waste.A save b spend c keep D take