1.   But as the world became increasingly interdependent this ceased to be the case and we became more concerned at our apparent weakness.

2.   I am much more concerned at my apparent lack of ability to convey what I mean.

3.   Taylor was concerned at the slow progress of the investigations.

4.   The Lord Chancellor was also concerned at the small numbers of women becoming eligible for appointments.

5.   Pandolfi is also concerned at the lack of funds available for research into renewable energy.

6.   ABS describes his fears as irrational but Nuclear Electric is understood to be seriously concerned at the implications.