If some doubt still remains how should a choice be made?

Yet no matter what came through, a doubt would remain in his mind.

However, doubt remains as to the safety of the air in the area.

However, doubt remained as to when the tape had been made.

"Many doubts remain, and they should be shared with patients."

However, doubts remain that he ever made such a journey.

Her doubt remained, but she was beginning to accept the fact that he believed.

For some, doubts remained of the Government's commitment to change.

Doubts remained, though, because she had planted them in him.

More legitimate doubts might remain as to its movement in view of the following facts.