1.We must look left and right when we ____(across) the road

1.We must look left and right when we ____(across) the road .2.We should be ______(care) next time. 3.Everyone need water to survive, so people can’t live ____(with/ without) water. 4.It’s time for you ____(go) to bed. 5.They had a rest under a big tree.(改为否定句) ___________