He __________ the workers together and spoke to them in the old hall of the farmhouse.
—Could you do me a favor and take these books to my office?—Yes, .
_____ entered the office when I realized that I had forgotten to bring my report.
It is known to all that ____ you exercise regularly, you won’t stay healthy.
Published in 1974,the book was a(n) _____ success and was soon translated into thirteen foreign lanuages.
The Medical Research Council said it could not _____ use of the new drug without further tests.