31.   To help tackle the problem, the park authority is carrying out a research study.

32.   We are anxious to see the urgent problem tackled at once.

33.   We made several unsuccessful attempts to tackle the problem.

34.   We will tackle the problem of congestion and environmental damage by enabling local authorities to provide better quality transport.

35.   We will tackle this problem with vigour.

36.   We would do better to adopt a direct approach and tackle the problem at its source.

37.   A number of neighbouring schools are pulling together to tackle the problem of drugs in schools.

38.   There is an urgent need for someone to tackle this problem.

39.   There are several different ways we can tackle this problem.

40.   Are there some countries that have been able to tackle these problems successfully?