The earlier efforts raised questions about the agency's ability to enforce its rules.

These conditions raise substantial doubt about its ability to continue as a going concern.

Some experts have raised concern, for instance, about the ability of the Government to control the contractors.

When he first came into office, questions were raised about the ability of the former prosecutor to perform damage control.

Despite security precautions, however, questions have already been raised about the ability of the new units to be effective.

This raises substantial doubt about the Company's ability to continue as a going concern.

What they want to do is avoid past mistakes that had raised questions about its ability to manage Japan.

The case again raises questions about the child welfare system's ability to respond to reports of abuse.

Human rights groups said the case raised doubts about Egypt's ability to provide a fair trial.

Mr. Bush's health problems raise questions about his ability to complete a second term.