We need get the first cut down by 21th

We need get the first cut down by 21th 连词成句cut we the trees will dirty get air the down if all shall we cut down the tree? But we do not need to send men down to get the oil out,as we 英语翻译But we do not need send men down to get the oil,as we mu the trees were cut down by the workers.the trees 英语翻译Remember that we can only get the nutrition we need by e Must we cut down the trees? No.we ____. We shoud not cut down the trees.这句话对么? We need a knife to cut the cake We need three k___ to cut the birthday cake. tree after tree went down,cut down by the water,which must h