cut down trees at

cut down trees at 是Don't cutting down trees. 还是Don't cut down trees. ? we must ask people not to cut down trees =we must -----people -------cutting down trees. cut down and burn a lot of trees什么意思? Millions of trees are being cut down to make paper. We should stop people from (cut)down trees. Must we cut down the trees? No.we ____. We must stop___ down trees.A.cutting B.cut cut down trees free or freely(免费） in great danger,we cut down many trees every year. Millions of trees are being cut down now.是什么语态? 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 One day,some men came and cut down some of the familiar trees at the side of the paths she 4 .4 为什么填 followed Trees are our friends.Don not______(cut them dowm,cut down them) we must stop -------(cut)down the trees.cut是不是用原形 there will be fewer trees in the future if people cut down trees?改为疑问句 look who ______(cut) trees over there?--they ______ down a lot of trees last sunday.