1.   Crime is a concern in both rural and urban areas.

2.   Even so there remain causes for concern in the Labour camp.

3.   From the beginning of June, a principal concern in Washington was that military force might be used to suppress the demonstrations.

4.   One pollutant which has attracted considerable concern in recent years is lead.

5.   Our concern in this chapter is with the functioning of perfectly competitive Markets.

6.   Our concern in this section is merely to consider what use could be made today of correspondence for sociological purposes.

7.   Suddenly nuclear proliferation became a high-priority concern in Washington.

8.   The announcement will cause concern in the Middle East, where water is one of the most sensitive strategic issues.

9.   The announcement will cause concern in the Middle East.