we must stop ------(talk)when class begin

we must stop ------(talk)when class begin we must stop-_____(pollute) our earth must doing him we like stop this we must stop talking同义句：we ()talk any more We must stop the pollution____(live)a happy life. must a stop at we red light排序 We must stop at a red light 写出问句 we must stop talking 保持句意不变 we must stop hunters form _____(hunt)animals The traffic light is red now.we must stop We must do something ________the river.A.stop polluting B.to stop polluting 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 and look both ways b___ we cross the road. We must stop cutting down forests.句意不变We ( )( )cutting down forests. We must stop using lead so that we can give our children a healthy environment. 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 the boys from playing foootball in the street.We must _______the boys _____ _____foootball in the street. The tyaffic light is yellow now .we must--------A.wait B.go C.stop