We must stop___ down trees.A.cutting B.cut

We must stop___ down trees.A.cutting B.cut we must ask people not to cut down trees =we must -----people -------cutting down trees. Must we cut down the trees? No.we ____. We are very tired let's stop___(have) a rest. what should we do to help stop___(hungry)? We must stop cutting down forests.句意不变We ( )( )cutting down forests. We must stop cutting down trees.句型转换保持句意不变,We_____ _____cutting down trees. It was too dangerous,so we couldn't more a stop___(far). we must ask people not to cyt down trees now.保持句意不变we must ______ people ______cutting down trees now. we must ask people not to cyt down trees now.保持句意不变 we must ______ people ______cutting down trees now. How many roads must a man walk down,before we called him a man 改错：The holiday are over,we must now get down to some hard work. we walk quickly down stairs must the 怎么连词成句? when _a diary ,we must be careful about what to write down是个完形填空 we must stop -------(cut)down the trees.cut是不是用原形 we must stop cutting down forest 改祈使句be important _______(to/for) We must stop cutting down forests.句意不变怎么改? We must