1 . Just now my mother told me the i________ (重要) of keeping healthy.

2 . Many people don’t know the i________ of health before they lose it.

3 . After the serious illness, he began to realize the i________ of health.

4 . Parents need to have good ________ (communicate) with their children.

5 . Can’t you see the “No smoking” s________?

6 . I can't understand the m________ of this sentence. Could you translate it for me?

7 . There is a big ________ between my sister and me. She is tall but I am short. (different)

8 . Look at the ________ (标志). We can’t swim here. It’s dangerous.