[2013·安徽卷] From space, the earth looks blue. This is ________ about seventyone percent of its surface is covered by water.
He was in hospital for six months.He felt as if he was_______from the outside world.
.________beat Xiao Ming black and blue is not known.
_______ I can see, there is only one possible way to keep away from the danger.
He is a ________child and his parents are ___________ with him.
These rivers should be prevented ___________.