I recognized him _______ I saw him, though we had been apart for over a decade.
Even on a cold day he prefers ______ out to play football ______ at home.
It was unwise of him to ______ the unreliable data in his speech.
—Would you mind giving your advice on how to improve our business management?—If you make ______ most of the equipment, there will be ______ rise in production.
Some people would rather ride bicycles as bicycle riding has ______ of the trouble of taking buses.
—I am afraid I can't return the book to you before Friday.— ______ .