Good friends should (分享) happiness and sadness with each other.
Nowadays,people care more about the food (安全).
Finally they (理解)the meaning of life after the accident last year.
The boy is only 10 years old,but he is much (高)than his father.
Children may depend on parents too much (除非)they learn to look after themselves from a young age.
I like the (第五)lesson best because there is a beautiful poem in it.