1．Police were anxious to hear any information concerning(concern) his whereabouts.
2．There is convincing evidence that_listening to loud music can do great harm to our hearing.
3．It's time to have lunch, so I think there surely are masses(mass) of people in the dining room.
4．Being_caught(catch) in a heavy traffic jam is quite an unpleasant experience.
5．They know that our country is in urgent(urge) need of those who have much knowledge.
Ⅱ.单句改错
1．It's frightened to think how easily children can be hurt.frightened→frightening
2．Happiness and success often come to those who are good at recognizing their own strength.strength→strengths
3．The sun heats the earth, which makes possible for plants to grow.makes后加it
4．Our government is determined to solve those problems that farmers are most concerned.concerned后加about/for
5．He did nothing but complaining to me about the food and the service of the restaurant.complaining→complain
