We must stop（ ） the litter on the beach to keep it clean.A.putting B.to put C.picking up D.to pick up

We must stop the pollution____(live)a happy life. The traffic light is red now.we must stop we must stop the young man from driving too fast（同义句）we must____the young man____driving too fast Nowadays,the earth is p_______s_____.Our earth is in d_______.We must p_______the earth.We must keep the earth c_____.We must stop p_______the earth.We must ___________________ We must stop the boys from playing foootball in the street.We must _______the boys _____ _____foootball in the street. Before we cross the road,we must stop and look both ways.对划线部分提问Before we cross the road划线（）（）we stop and look both ways we must stop using the waste books 同义句改为 we must 两个空格 using the waste books We must stop and look both ways b___ we cross the road. We must do something( )(stop) the ( )(chemistry) factory from( )(pour) the waste water( )(介词) the we must stop ------(talk)when class begin we must stop-_____(pollute) our earth must doing him we like stop this The tyaffic light is yellow now .we must--------A.wait B.go C.stop We must stop the pollution to our beaches.为什么 用to We must stop people from ___(throw)rubbish into the river We must to something to stop the serious nuclear radiation from japan改为被动语态 we must stop -------(cut)down the trees.cut是不是用原形 We must take actions to stop factories ____ ____ ___ the farmla