His own search calls throughout the equatorial zones had remained unanswered.

Since there is no documentary evidence, the question of whether he sympathized with the Protestants remains unanswered.

Clay had tried repeatedly to renew contact but his radio messages had remained unanswered.

And the most intriguing question of all still remained unanswered.

The only question remaining unanswered, in Bolan's mind, was the when of it.

In conclusion, though there is no denying the seriousness of the problem, many questions still remain unanswered.

Over the years, an important question has remained unanswered: how many partial-birth abortions are actually done?

However, the questions raised and my previous question to the Commission about the very high cost of this particular endeavour have remained unanswered.

Those are relevant questions, which have remained unanswered.

Everything else that has been written or said about love is not a conclusion, but only a statement of questions which have remained unanswered.