1．Man is fighting a ______(战斗) against pollution.
2．No one is born ______(完美的). You just need to be practical and self－confident.
3．The government ______(宣布) that they would build a new highway to the mountain.
4．The old man entered the room ______(搀扶) by his grandson.
5．A ______(私人) car gives a much greater degree of comfort and mobility.
