改否定句：Let them cross the road.

改否定句：Let them cross the road. Let them go (改否定句) Let ’s cross the road改 否定句 Please cross the road.改否定句 Let's help them.改为否定句 let us go home改否定句 let's help them （改为否定句）为什么是 let's not help them Let's cross the road.(改成否定句)____ ____ ceoss the road. Let us go home now 改为否定句怎么改 Let's go home now.的否定句如何改 Let's go to the park together.改否定句 改否定句 Let's sweep the floor let's make some tea 改否定句 Put them on the desk 改否定句 I'll go and join them改否定句? I'll go and join them.(改否定句) 1.Let them have a rest.（改否定句）2.The monster has three ____ (mouth) and many sharp ____.(tooth Let me do it!（否定句）感叹句改否定句.