we can save us having to invest in more and more books 这里的having是做的什么成分呢

how can we save paper? we can save water by turning we can save us having to invest in more and more books 这里的having是做的什么成分呢 六年级英语作文：How can we save water. what can we do to help save the world?作文 we can save paper by u() both sides We need someone like Supermanwho can save Tony. we will do what we can ( ) the sick boy Awe will do what we can ( ) the sick boyA.save B.to save C.save D.saving We should do -- we can -- those endangered animals,A that ,to save .B which save,C that ,save .D what ,to save,选什么呢,为什么啊. 单项选择； Every one of us must know:( )we live can we save the earth.A.by changing the way only B.only by changing the wayC.by only changing the way D.by changing only the way Forests and our life至少六句话Suggested outlines：what are forests?what do forests provide for us?what do we use wood to do ?How can we save forests? (30pts)帮忙改一下这一篇英语作文:how to save wateras we all know,there is only a little water which people can use is less and less.water is very important to all of us so we should try our best to save it.humans can't live without water b we should do as much as we can ___ water.A to save B save 哪个队? can we make animais work for us? The love about us ,Where can we we should do everything we can （to save）water 为we should do everything we can （to save）water 为什么不是save can后面是动词原形呀… Every one of us must know：________we live can we save the earth.A.by changing the way only B.only by changing the way C.by only changing the way D.by changing only the way ______（take）a bus there can save us a lot of time