Uncertainty remains over costs for social services after Washington made major changes in welfare.

But until people know precisely what that 1 percent is, uncertainty remains.

But, on the basis of currently available evidence, uncertainty remains.

But some uncertainty remains about how to keep all the promises they made, meaning major changes are still months away.

But occasionally, the uncertainty remains about which person to choose.

However, there still remains some uncertainty as to the true source of the treasure.

While those efforts can help to make sense of the designs, considerable uncertainty remains about who gets the final word.

In addition, considerable uncertainty must remain until we know government's firm views on our future.

But his uncertainty remained: had she tried to tell him something beyond the plain content of her words?

But construction is to begin while several uncertainties remain about costs and schedules.