21.   The government has failed to tackle the problem of youth crime.

22.   The government has made a big effort to tackle the problem of poverty.

23.   The housing defects legislation was introduced to try to tackle those problems.

24.   The initiative has also made concerted attempts to tackle these problems.

25.   The previous government made a brave attempt to tackle the problem.

26.   Their top computer engineers were sent out to tackle the problem.

27.   There is more than one way to tackle the problem.

28.   There is more than one way to tackle this problem.

29.   These problems have been tackled in different ways and with different degrees of success, as I shall later try to explain.

30.   This is the first serious attempt to tackle the problem.