By looking at a problem in as many ways as possible, creative thinkers can find solutions that would _______ remain invisible.
It isn't quite _____ that he will be present at the meeting.
The island where these rare birds nest has been declared a _____.
Kate's ambition to become a nurse _____ from a desire to help others.
Dress warmly, _____ you'll catch cold.
They have held several meetings to _____ next year's production plans.