来源：网络资源 2009-09-27 15:21:33
1.We will become _______ ( 健康 ) if we often eat a lot .
2. The people were always happy when the plane landed _______ ( 安全地 ).
3. The noise pollution was really a problem before the ______ ( 关闭 ) of the old airport.
4.Many people in China has _______ ( 拥有 ) cars for many years.