一个英语完形填空,写出答案,need remember never like water doanother mista

一个英语完形填空,写出答案,
need remember never like water do
another mistake often friend good rich
Graduation is coming! Many students are leaving school. What are they taking with them? A lot of things for sure, but the most important thing is （ 1 ） .
We asked some teachers to give us the last lesson. The lesson is proverbs (谚语)about friends. Older people （2 ） teach proverbs to younger people. Every culture has proverbs. They are short and easy to （3 ） .
There is a German proverb which says, "Friendship is a plant we must （ 4 ） " It
means that we need to take care of friends（ 5） taking care of a garden. "Only your real friends will tell you when your face is dirty." is （ 6） proverb from Japan. It means that only （ 7） friends tell you when you are making a （8 ） .
My grandfather told me, " Nobody is so （9 ） that he can throw away a friend." Everyone （ 10） friends. Be good to them.
Goodbye, friends! Don't forget us!