1.   Both theoretical and practical problems exist in fashioning out conceptual frameworks for the development of the continent.

2.   But in practice a certain period of time May elapse before the authorities are able to recognize that a problem exists.

3.   But, before you can find a solution, you first have to realise that a problem exists.

4.   Children who are very passive and uncommunicative should alert us to the possibility that problems exist in the life of the family.

5.   Evidence strongly suggests that a serious problem exists and research is needed to better understand this phenomenon and its causes.

6.   However, some technical problems exist.

7.   If a problem even exists, he said, it probably can be explained.

8.   If a problem still exists, consult the Vice President for Research and Development.

9.   In a couple of weeks they would get the bugs out, and it would be as if no problem had existed.

10.   Is he further aware that a problem exists in finding suitable financial resources for nursery education?