He was seriously concerned about the number of people who'd stopped concentrating on the war effort.
I am seriously concerned about Pat's absence from the office, and the fact that she doesn't answer the phone when we call her.
But he seems to have been very seriously concerned about its effect on his audience.
I'd be seriously concerned for his health if he started now.
If the figure falls below 90,000, the Gephardt forces will be seriously concerned.
I'm seriously concerned about the hostages those men have in there.
"Nobody except Peter was ever seriously concerned," one executive said.
When he looked up, he saw that she was seriously concerned.
Perhaps this is justified in individual cases, but I am seriously concerned about our human rights work.
We are seriously concerned about the deteriorating human rights situation in Iran.