______ a certain doubt among the people as to the practical value of the project.
—Oh no! We're too late. The train __________. —That's OK. We'll catch the next train to London.
—Have you heard about the recent election? —Sure, it __________ the only thing on the news for the last three days.
—When shall we restart our business? —Not until we __________ our plan.
The manager __________ the workers how to improve the program since 9 am.
Shakespeare's play Hamlet __________ into at least ten different films over the past years.