In recent days, American officials have expressed concern that they were running out of time to set up a northern front.

Chinese officials have expressed an interest this spring in building five or six power plants with the new technology instead of just one.

American officials have expressed concern about the cost of the Chinese proposal.

Various officials expressed their appreciation, including the governor of California.

But some American officials express concern about the interim force's success.

Other officials in the intelligence bureau have also expressed concern.

But officials have not expressed their views on many of the other riders.

Officials expressed worries that people had gone for over a week with no aid.

European officials have expressed growing reluctance to make a deal with a President who may soon be forced from office.

But some business owners and elected officials have expressed concern.