if people cut down the forest,they will have nowhere to live为什么后面不用介词in

选择题People shouldn't __trees because they are thebirds' home.a.cut down b.cut off If people cut down more trees,the wild animals will have nowhere to live同义句 If people cut down more trees,the wild animals ------- have ---------- --------- ------------- ----------------. Will animals will have nowhere to live if people cut down forests.（改为同义句） there will be fewer trees in the future if people cut down trees?改为疑问句 If people ()(continue)to cut down the trees,the birds will have nowhere to live. If people keep cutting down the trees,animals will have nowhere to live.If people ______ _______ cut down the trees,animals will have nowhere to live. People mustn't cut down the forests.改为祈使句,快 !急死了! I hope people won't cut down more trees是否定句吗 if people cut down the forest,they will have nowhere to live为什么后面不用介词in if people cut down the forest,they will have nowhere to live 同义句 if people keep cuttingif people keep cutting down the forest,they will have nowhere to live同义句填空if people ___ ___ cut down the forest,they will have nowhere to live 请 cut down Cut down cut down ? Trees are very important.We can't cut thenm down B cut it down C cut down themD cut down it people cut down trees,so elephants are losing their homes.cut 是过去式吗people cut down trees,so elephants are losing their homes.cut 是过去式吗 We should stop people from (cut)down trees. we must ask people not to cut down trees =we must -----people -------cutting down trees. We mustn't cut down forests 句型转化We ____ ____to cut down forests