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.

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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.makesºó¼Óit

4£®Our government is determined to solve those problems that farmers are most concerned.concernedºó¼Óabout/for

5£®He did nothing but complaining to me about the food and the service of the restaurant.complaining→complain