词汇运用（本题共有15小题， 每小题1分， 共计15分）
A．用方框中所给词的适当形式填空，每词限用一次。

hang  wealthy  hundred  they  hear from

 
I was very surprised when I         a stranger from a village far away.
—What do you think of the sweater which he is         over there ?
— It looks so smart .
Everyone should take care of       because health is the most important in life.
Last year        of people died in the air crash.
Knowledge makes one laugh, but          makes one dance.