the trees can keep the air______1.clean 2.cleaner 3.cleanest 4.the cleanest

英语..急.when there aren't many trees ,the ground can't keep enough water .用unless 改写 Trees can ___water in the soil,so the strong wind can't blow the earth away.选什么?A prevent B protect C save D keep you can’t see the word for the trees. 翻译 the trees can keep the air______1.clean 2.cleaner 3.cleanest 4.the cleanest Trees can keep water from r______ away She can't park the bike under trees.改为祈使句 Trees and plants can keep the water from flowing away这句话到底怎么翻译合适, 关于keep from的理解!请问以下两个句子的意思是否相同,或是否正确1）The trees can keep the wind from destroying crops.2）The trees can keep crops from being destroyed by wind. It's our d____ to protect our environment .No matter w____ we live,we can do s_____to keep our neig____ we live,we can do s_____to keep our neighborhood clean and tidy .We should p___ more trees.We mustn't ______in the steet.We mustni't pick the flow Trees can keep water from ____(run) away怎么填 You can't climb trees.改为祈使句 You can't keep the birds from fling over your head ,but you can keep them from biulding a cest. It's our d____ to protect our environment .No matter w____ we live,we can do s_____to keep our neighorhood clean and tidy.We can c_____ waste things for r_____.We sould p_____ more trees.We mustn't ______in the steet.We mustni't pick the flowens or s if you can't keep the news a s(),i won't tell you Sometimes you can choose,but sometimes you can't,the only thing we can do is keep the hope. Trees Keep the air clean.这句话的意思 keep face to the sunshine and can t see the shadow叫什么歌 The force of air can keep the water won’t fall down有语法错误吗?